Like the other comitia, the tribes had to be summoned to vote by a magistrate with the right to do so (ius agendi cum populo) on a day on which it was religiously permitted to summon an assembly (a dies comitialis) and after favourable auspices in an inaugurated templum.
After some speeches by the presiding magistrate and those he invited, the magistrate ordered citizens to reassemble by tribe. The tribes then voted without any deliberation; any public debate occurred prior to the legislative comitia through duelling contio where magistrates spoke to an unorganised crowd urging them one way or the other on upcoming legislation. Citizens identified themselves to tribal officials (tribules). Prior to the introduction of the secret ballot – in various years between 139 and 107 – an official would have received the votes orally; afterwards officials counted wax tablets deposited in turns and returned the results to the presiding magistrate.
Application of the lot made the order in which an electoral candidate received votes important, making electoral results partially determined by chance, since all remaining votes were discarded once all posts were filled. The effect of the lot was such that candidates who were more popular among the tribal blocs could be passed over by another candidate who reached a majority more rapidly. In elections, the results became binding when the presiding magistrates completed the task of creating their successors by swearing in the winners.
Turnout in tribal assemblies could at times be extremely low. Cicero, in Pro Sestio, mentions that if a tribe had no voters turn up at all, citizens in other tribes could be transferred by lot to vote for the empty tribe instead. Regardless, estimates of the size of the voting spaces imply maximum voter turnout between 0.66 and 1.85%.
In the historical period the Roman republic had three kinds of citizen assemblies: the curiate, centuriate, and tribal assemblies. The curiae were likely organised by birth; the centuriae were organised instead by wealth (and later incorporated some tribal organisation); the tribus were organised by residence.
The Livian narrative indicates that the first assembly organised on a tribal basis was the plebeian concilium in 471 BC. The tribal assembly – contra concilium plebis, see § Distinction from the plebeian council below, – came into existence some time before 447 BC, when the assembly is first attested as electing quaestors. Before the conquest of Veii c. 396 BC there were 21 tribes; the number of tribes reached the classical number of thirty-five in 241 BC. It was not thereafter changed.
The tribal assembly over time came to elect more kinds of magistrates. After the election of quaestors, it started to elect curule aediles in 366 BC, military tribunes in 311, and commissions for the establishment of colonies by 197 BC. Trials before the people (Latin: iudicium populi) were also held before the tribes under the presidency of aediles by 329 and under plebeian tribunes by 212.[34]
Enrolment of the new citizens among the existing tribes made them a target for Roman political electioneering, which relied on the aristocrats plying voters with gifts and patronage. However, the impact of enrolment for the far-flung Italians was minimal since political rights could only be exercised in person at Rome at the initiative of the urban magistrates. Regardless, integrating these new citizens into the urban elite's patronage structures and mobilising them for political struggles at Rome was a fraught and disruptive process which contributed to the stormy politics of the next generation.
The tribal assembly is still attested into the imperial era. The last known law passed by any comitia is the lex Cocceia agraria in AD 98. It met at least into the third century AD. Memories of the tribes and elections continued into late antiquity, even though the institutions themselves were obsolete.
While each tribe had each vote and voters were not ranked by wealth for voting purposes, the number of voters within each tribe was not the same. The newer tribes created in the third and fourth centuries likely had within them more voters than the older tribes closer to Rome. Nor was it entirely likely that the outlying tribes' poorer voters would have the time to make themselves physically present in Rome for an assembly. This likely favoured, for rural tribes, wealthy landowners who could afford to make the journey to Rome and have their votes counted. However, this effect may have been mediated in the late republic by population inflows to Rome itself. Since there were no completed censuses between 70 and 28 BC, persons registered in a rural tribe who moved into the city were likely never reassigned to an urban one, meaning that votes were likely dominated by residents of the city.
Each of the tribes was artificial; they did not correspond to any real bond of antecedence but instead to a geographic district in which a voter's properties were. The thirty-five tribes were divided into two groups: the thirty-one "rural" tribes and four "urban" tribes. Initially they were merely differences in residence but by the middle republic the "urban" tribes had become socially inferior. Imperial-era evidence indicates that the urban tribes had some 34 times more citizens at Rome than the rural tribes.
The four urban tribes were assigned to Rome and were Suburana, Palatina, Esquilina, and Collina. Suburana and Esquilina were especially disfavoured. They were perceived as less prestigious: it was a possible punishment from the censors to be relegated from a rural tribe to an urban one. Moreover, so to restrict the influence of manumitted slaves and dilute their individual votes, these were the four tribes into which all freedmen were assigned regardless of their locations of actual residence. While attempts were made at various times to assign freedmen to rural tribes and win their political support, such attempts were always reverted.
The other thirty-one rural tribes were, in traditional order – assigned in a counter-clockwise order by geography around Rome – with exception of Aemilia whose place in the order is not known,
Each tribe corresponded to a geographic area. Initially, in the archaic period they were expanded largely by extending the neighbouring tribe and attaching whatever the relevant territory contiguously. However, when Rome conquered substantial territories, such as after the victory over Veii, new tribes were established therein. However, they were also sometimes associated with specific ethnic areas, lumped together as a single tribe after conquest. Both poor and rich citizens benefited from new tribes: the poor received land allotments and the rich, by changing tribe, gave themselves political influence in a tribe which, due to distance from Rome, sent few voters but received a same vote regardless.
By the middle republic, the tribes had become hugely malapportioned, especially so for the huge and distant tribes Pollia and Velina. Further expansion of Roman territory in the aftermath of the Social war and the eventual decision to enrol the Italians into the existing thirty-five tribes rather than confine them to a limited number of new tribes, compounded the chaos. The Latins, who were ancient Roman allies were enfranchised and registered likely based on the tribe previously assigned to their magistrates (since 125 BC magistrates of Latin towns received Roman citizenship and a tribe). Other Latins were assigned to tribes that were known to have few citizens. The Italians who fought against Rome, however, were assigned by ethnicity to tribes that were not allotted to the Latins. By the end of the post-Social war enrolments, the tribes remained malapportioned (though to an extent less so with expansion of some of the smaller tribes) and had also become largely non-contiguous, with some tribes divided into up to six different districts.
In the late republic the older rural tribes close by to Rome may have become depopulated by urban inflow and the yeoman decline. Such tribes would have become akin to rotten boroughs where aristocratic families controlled tribal votes malapportioned to a tiny electorate. However, it is not clear whether rural tribesmen migrating to Rome were routinely re-enrolled into the urban tribes. That after the Sullan period the censors were never able to complete their tasks suggests that no such re-enrolment occurred.
The tribal assembly and the plebeian council were organised on the same principles and voted by tribes. After the lex Hortensia in 287 BC endowed the plebeian council with full legislative powers, the two assemblies became practically identical. The modern orthodoxy distinguishes a comitia tributa from a concilium plebis, where the latter is a meeting of plebeians alone. Under this formulation, there are two tribal assemblies, one of the whole people and one of plebeians only.
Some scholars believe that there was, however, only one tribal assembly. In this formulation, the only tribal assembly was the plebeian council and that for most, if not all, of the republican era tribal assemblies were convened by plebeian tribunes and not by curule magistrates such as consuls and praetors. Under this view, the statements that a consul or praetor legislated before the tribes were simplifications meant to express a curule magistrate leaning on a friendly tribune.[69] This view rejects the modern "orthodoxy" from Theodor Mommsen that the separation reflected plebeians' status as a "state within a state" and accentuates the difference between tribal and centuriate assemblies, placing the former as the people organised for a civil purpose (domi) within the pomerium and the latter as organised for a military one (militiae) on the campus Martius outside that sacral boundary.
Lomas 2018, p. 189. - Lomas, Kathryn (2018). The rise of Rome. History of the ancient world. Cambridge: Harvard University Press. doi:10.4159/9780674919938. ISBN 978-0-674-65965-0. S2CID 239349186. https://doi.org/10.4159%2F9780674919938
Momigliano & Cornell 2012.
Cornell 2022, pp. 226–27, noting also that by the middle republic the distinction between tribal assembly and plebeian council was "mere technicality". - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Sandberg 2018, noting that "in later republican times, most legislative assemblies were tribal ones, convened by tribunes of the plebs". - Sandberg, Kaj (31 December 2018). "comitia and concilia". Encyclopedia of ancient history. pp. 1–2. doi:10.1002/9781444338386.wbeah20037.pub2. ISBN 978-1-4051-7935-5. https://doi.org/10.1002%2F9781444338386.wbeah20037.pub2
Lomas 2018, p. 297; Lintott 1999, p. 40. - Lomas, Kathryn (2018). The rise of Rome. History of the ancient world. Cambridge: Harvard University Press. doi:10.4159/9780674919938. ISBN 978-0-674-65965-0. S2CID 239349186. https://doi.org/10.4159%2F9780674919938
Lomas 2018, p. 297. - Lomas, Kathryn (2018). The rise of Rome. History of the ancient world. Cambridge: Harvard University Press. doi:10.4159/9780674919938. ISBN 978-0-674-65965-0. S2CID 239349186. https://doi.org/10.4159%2F9780674919938
Momigliano & Cornell 2012.
Cornell 2022, p. 227, citing Cic. Amic., 96; Varro Rust., 1.2.9. - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Vishnia 2012, p. 133, noting that Gaius Licinius Crassus was responsible for moving from the comitium to the forum. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
Lomas 2018, p. 234, noting maximum capacity. - Lomas, Kathryn (2018). The rise of Rome. History of the ancient world. Cambridge: Harvard University Press. doi:10.4159/9780674919938. ISBN 978-0-674-65965-0. S2CID 239349186. https://doi.org/10.4159%2F9780674919938
Mouritsen 2017, pp. 55–56. - Mouritsen, Henrik (2017). Politics in the Roman republic. Cambridge University Press. ISBN 978-1-107-03188-3. LCCN 2016047823. https://lccn.loc.gov/2016047823
Lintott 1999, p. 55, noting a terminus post quem with Tiberius Gracchus' tribunate in 133 BC. - Lintott, Andrew (1999). Constitution of the Roman republic. Oxford University Press. ISBN 978-0-19-926108-6.
Vishnia 2012, p. 134. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
Vishnia 2012, p. 129. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
Tatum 2009, p. 221. - Tatum, W Jeffrey (2009). "Roman democracy?". In Balot, Ryan K (ed.). A companion to Greek and Roman political thought. Wiley. pp. 214–27. doi:10.1002/9781444310344. ISBN 978-1-4051-5143-6. https://doi.org/10.1002%2F9781444310344
Vishnia 2012, p. 129, noting introduction of secret ballot for elections in 139, for non-treason trials in 137, for legislation in 131 or 130, and for treason trials in 107. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
Vishnia 2012, p. 121. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
Mouritsen 2017, p. 50. - Mouritsen, Henrik (2017). Politics in the Roman republic. Cambridge University Press. ISBN 978-1-107-03188-3. LCCN 2016047823. https://lccn.loc.gov/2016047823
Vishnia 2012, pp. 97, 121. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
The principium as omen: Cornell 2022, p. 227. Rejecting the principium as omen: Mouritsen 2017, p. 50. - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Mouritsen 2017, p. 50. - Mouritsen, Henrik (2017). Politics in the Roman republic. Cambridge University Press. ISBN 978-1-107-03188-3. LCCN 2016047823. https://lccn.loc.gov/2016047823
Cornell 2022, p. 227, asserting the order was determined by lot. - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Cornell 2022, p. 227. - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Vishnia 2012, p. 122. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
Mouritsen 2017, p. 50. - Mouritsen, Henrik (2017). Politics in the Roman republic. Cambridge University Press. ISBN 978-1-107-03188-3. LCCN 2016047823. https://lccn.loc.gov/2016047823
Vishnia 2012, p. 122. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
Vishnia 2012, pp. 122, 123. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
Mouritsen 2017, p. 56; Vishnia 2012, p. 128. Both cite Cicero, Pro Sestio, 109 - Mouritsen, Henrik (2017). Politics in the Roman republic. Cambridge University Press. ISBN 978-1-107-03188-3. LCCN 2016047823. https://lccn.loc.gov/2016047823
Vishnia 2012, p. 126, noting figures provided by Mouritsen at 0.66% and Nicolet at 1.85%. - Vishnia, Rachel Feig (2012). Roman elections in the age of Cicero: society, government, and voting. Routledge Studies in Ancient History. New York: Routledge. ISBN 978-0-415-87969-9.
Lomas 2018, p. 136; Cornell 1995, p. 25. - Lomas, Kathryn (2018). The rise of Rome. History of the ancient world. Cambridge: Harvard University Press. doi:10.4159/9780674919938. ISBN 978-0-674-65965-0. S2CID 239349186. https://doi.org/10.4159%2F9780674919938
Cornell 1995, p. 116. - Cornell, Tim (1995). The beginnings of Rome. London: Routledge. ISBN 0-415-01596-0. OCLC 31515793. https://search.worldcat.org/oclc/31515793
Momigliano & Cornell 2012, citing Livy, 2.56.2.
Momigliano & Cornell 2012.
Pina & Díaz 2019, p. 196, citing Tac. Ann., 11.22. - Pina Polo, Francisco; Díaz Fernández, Alejandro (23 September 2019). The quaestorship in the Roman republic. De Gruyter. doi:10.1515/9783110666410. ISBN 978-3-11-066641-0. S2CID 203212723. https://doi.org/10.1515%2F9783110666410
Badian & Honoré 2012.
Lomas 2018, p. 188. - Lomas, Kathryn (2018). The rise of Rome. History of the ancient world. Cambridge: Harvard University Press. doi:10.4159/9780674919938. ISBN 978-0-674-65965-0. S2CID 239349186. https://doi.org/10.4159%2F9780674919938
Tan 2023, p. 110; Forsythe 2005, p. 179. - Tan, James (2023). "Geography and the reform of the comitia centuriata". Classical Quarterly. 73 (1): 109–126. doi:10.1017/S0009838823000484. ISSN 0009-8388. https://doi.org/10.1017%2FS0009838823000484
Stewart 2012, noting that the election of colonial administrations may be documented as early as 296 or 467 BC as well. - Stewart, Roberta (26 October 2012). "tribus". Encyclopedia of ancient history. Wiley. doi:10.1002/9781444338386.wbeah20132. ISBN 978-1-4051-7935-5. https://doi.org/10.1002%2F9781444338386.wbeah20132
Gabba 1994, p. 123.
Mouritsen 1998, p. 163, adding in n. 32, that the number of new tribes is unclear: "Sisenna, 17P, mentions an early proposal to create two new tribes, while Velleius, 2.20.2, states that the new citizens were to be inscribed in eight [new] tribes". - Mouritsen, Henrik (1998). Italian unification. London: British Institute of Classical Studies. ISBN 0-900587-81-4.
Steel 2013, p. 86 n. 25, citing Appian, Bella civilia, 1.49, for ten new tribes. - Steel, Catherine (2013). The end of the Roman republic, 149 to 44 BC: conquest and crisis. Edinburgh History of Ancient Rome. Edinburgh University Press. doi:10.1515/9780748629022. ISBN 978-0-7486-1944-3. https://doi.org/10.1515%2F9780748629022
Broughton 1952, p. 41, citing: Asc., 64C; Appian, Bella civilia, 1.55–56; Livy, Periochae, 77. - Broughton, Thomas Robert Shannon (1952). The magistrates of the Roman republic. Vol. 2. New York: American Philological Association.
Mouritsen 1998, p. 168. - Mouritsen, Henrik (1998). Italian unification. London: British Institute of Classical Studies. ISBN 0-900587-81-4.
Mouritsen 1998, p. 170. - Mouritsen, Henrik (1998). Italian unification. London: British Institute of Classical Studies. ISBN 0-900587-81-4.
Mouritsen 1998, pp. 169–70. - Mouritsen, Henrik (1998). Italian unification. London: British Institute of Classical Studies. ISBN 0-900587-81-4.
Mouritsen 1998, p. 171. - Mouritsen, Henrik (1998). Italian unification. London: British Institute of Classical Studies. ISBN 0-900587-81-4.
Momigliano & Cornell 2012; Stewart 2012.
Bujuklic, Zika (1999). "Ancient and modern concepts of lawfulness". Revue internationale des droits de l'antiquité. 46: 123–64. See p. 154 n. 69, citing Dig., 47.21.3.1 (Callistratus).
Millar 1998, pp. 198–99. - Millar, Fergus (1998). The crowd in Rome in the late republic. University of Michigan Press. ISBN 0-472-10892-1. https://books.google.com/books?id=YVBNzYQy5vYC
Cornell 2022, p. 227. - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Cornell 2022, p. 228. - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Cornell 2022, p. 227, noting that the urban elite voted based on the location of their country estates while the landless urban poor voted in the urban tribes. - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Lomas 2018, p. 293. - Lomas, Kathryn (2018). The rise of Rome. History of the ancient world. Cambridge: Harvard University Press. doi:10.4159/9780674919938. ISBN 978-0-674-65965-0. S2CID 239349186. https://doi.org/10.4159%2F9780674919938
Taylor & Linderski 2013, p. 149. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, p. 70, attributing the order to Varro and Festus. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, p. 148. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, p. 138. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, pp. 132–33. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Lomas 2018, pp. 293–94, noting reform attempts to enrol freedmen in the rural tribes and revise the senate rolls by Appius Claudius Caecus then-censor in 308 BC that were quickly reverted and unsuccessful, respectively. - Lomas, Kathryn (2018). The rise of Rome. History of the ancient world. Cambridge: Harvard University Press. doi:10.4159/9780674919938. ISBN 978-0-674-65965-0. S2CID 239349186. https://doi.org/10.4159%2F9780674919938
Taylor & Linderski 2013, p. 74. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, p. 41. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, p. 48. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, p. 48. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, pp. 86–87, noting this stopped due to infeasibility by the second century BC. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, pp. 89–90. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, pp. 90–91, noting also that Pollia became one of the largest tribes due to continued expansion into formerly Gallic land. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, pp. 91–93. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, p. 99. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, pp. 108–10. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, p. 111. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, p. 114. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Taylor & Linderski 2013, pp. 116–17, noting that Romilia, Pupinia, and Sabatina remained relatively small and over-weighted. - Taylor, L R; Linderski, Jerzy (2013) [First ed. published 1960]. The voting districts of the Roman republic: the thirty-five urban and rural tribes (Updated ed.). Ann Arbor: University of Michigan Press. ISBN 978-0-472-11869-4. OCLC 793581620. https://search.worldcat.org/oclc/793581620
Cornell 2022, p. 227. - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Cornell 2022, p. 228. - Cornell, Tim C (2022). "Roman political assemblies". In Arena, Valentina; Prag, Jonathan (eds.). Companion to the political culture of the Roman republic. Wiley Blackwell. pp. 220–35. ISBN 978-1-119-67365-1. LCCN 2021024437. https://lccn.loc.gov/2021024437
Lomas 2018, p. 189. - Lomas, Kathryn (2018). The rise of Rome. History of the ancient world. Cambridge: Harvard University Press. doi:10.4159/9780674919938. ISBN 978-0-674-65965-0. S2CID 239349186. https://doi.org/10.4159%2F9780674919938
Lintott 1999, p. 53. - Lintott, Andrew (1999). Constitution of the Roman republic. Oxford University Press. ISBN 978-0-19-926108-6.
Lintott 1999, p. 53 n. 62. - Lintott, Andrew (1999). Constitution of the Roman republic. Oxford University Press. ISBN 978-0-19-926108-6.
Forsythe 2005, pp. 176, 180. - Forsythe, Gary (2005). A critical history of early Rome. Berkeley: University of California Press. ISBN 978-0-520-94029-1. OCLC 70728478. https://search.worldcat.org/oclc/70728478
But see Cornell 1995, p. 265. - Cornell, Tim (1995). The beginnings of Rome. London: Routledge. ISBN 0-415-01596-0. OCLC 31515793. https://search.worldcat.org/oclc/31515793
Forsythe 2005, p. 181. - Forsythe, Gary (2005). A critical history of early Rome. Berkeley: University of California Press. ISBN 978-0-520-94029-1. OCLC 70728478. https://search.worldcat.org/oclc/70728478
Lintott 1999, pp. 53–54, noting the lex Quinctia in 9 BC, the lex Gabinia Calpurnia de Delo in 58, a lex Cornelia during Sulla's dictatorship, and an epigraphic law attributed directly to a praetor. - Lintott, Andrew (1999). Constitution of the Roman republic. Oxford University Press. ISBN 978-0-19-926108-6.
Forsythe 2005, p. 233. - Forsythe, Gary (2005). A critical history of early Rome. Berkeley: University of California Press. ISBN 978-0-520-94029-1. OCLC 70728478. https://search.worldcat.org/oclc/70728478