The Collaborative International Dictionary
Populares \Pop`u*la"res\, n. pl. [L.] The people or the people's party, in ancient Rome, as opposed to the optimates.
Wikipedia
The Populārēs ("favouring the people", singular populāris) were a political faction in the late Roman Republic which favoured the cause of the plebeians (the commoners), particularly the urban poor. It supported laws regarding the provision of a grain dole for the poor by the state at a subsidised price. It wanted reforms which helped the poor, particularly land redistribution for the poor to farm and debt relief. At times it also supported the extension of Roman citizenship to Rome's Italic allies. A popularis was a politician who supported this faction. The populares are regarded in modern scholarship as in opposition to the optimates, who are identified with the conservative interests of the patricians (the aristocracy) and supported the senate, which represented it interests.
Usage examples of "populares".
No tienen bardos o trovadores, pero cada uno de los hombres de la tribu se sabe las baladas populares de su propio clan, y, después de algunas jarras de cerveza, son muy dados a ponerse a berrear a unos niveles capaces de romper los tímpanos.