Elections in the Roman Republic were an essential part to its governance, although all citizens did not always play a consistently equal part in them. Upper class interests, centered in the urban political environment of cities, often trumped the concerns of the diverse and disunified lower class; while at times, those already in power would pre-select candidates for office, further reducing the value of voters’ input. The candidates themselves at first remained distant from voters and refrained from public presentations (in fact, formal speech-making was at one point forbidden in an effort to focus on the policies rather than the charisma of the candidate), but they later more than made up for time lost with habitual bribery, coercion, and empty promises. As the practice of electoral campaigning grew in use and extent, the pool of candidates was no longer limited to a select group with riches and high birth. Instead, many more ordinary citizens had a chance to run for office, allowing for more equal representation in key government decisions. During the Roman Republic citizens would elect almost all officeholders annually.
Elections were a central element to the history and politics of Rome for some 500 years, and the major historians such as Livy and Plutarch make frequent references to them. What does not exist is a comprehensive account on how elections worked. Historians have reconstructed details from scattered accounts from different eras, but much is still uncertain and there is scholarly debate over several elements.
Sallust gives a valuable account of Marius' first consul campaign of 107 BCE in the Jugurthine War. The most important sources are writings by Cicero. While his major works touch on elections, his daily life was immersed in late Republican politics, and his surviving letters and orations are the most valuable. Two important ones are Pro Murena and Pro Plancio, both legal speeches to defend candidates accused of bribery.
The most comprehensive surviving source is the Commentariolum Petitionis (Little Handbook on Electioneering) by Quintus Tullius Cicero. It is a how-to guide on running for consul, written by Quintus for his brother's campaign in 64 BCE. Unfortunately there are many doubts as to its authenticity, accepted by some as authentic to the period, others date it a century later to an author who would not have direct knowledge of election realities.