According to Millar, what powers did the Roman people have? How did that make Rome more democratic?

According to Millar, he said that there was 3 formal powers: 1.) residual role of the assembly to meet as criminal courts 2.) elections conducted by eather the Century Assembly or the Tribal Assembly 3.) able to legislate

Fergus Millar argued that Rome had a democratic model of government. Some instances were: Roman citizens voted on proposals put forward by magistrates, the Roman Senate was an advisory body to magistrates elected by the people, and that suffrage was a privilege enjoyed by male Roman citizens.