What are millers arguments against those who claim that the Roman republic was a top down system

Miller claims that in Roman political System, the power of the people upheld the Political process. This means that the Roman Republic already used Democracy as their Governmental system. In such a way, more power and freedom of choice was given to people through the process of elections. They could influence the political cource of the Republic.

Millar's claim against those who claim that the Roman Republic was a "top down" system was that the power of the people upheld the political process in the Roman Political System. Moreover, the Roman Republic used Democracy to give more freedom and power to people through elections.