What argument did la follette use to show that primary elections are the foundation of government in a republic?

Robert La Follette established a primary election arguing that voters had the right to elect their candidates. La Follette represented the Progressive Movement of the United States and was governor of Wisconsin. He also wanted to have more competition within the political parties when choosing their candidates.      

he was in office from 1929 to 1933 and served as a reform governor, promoting programs to combat the economic crisis besetting the united states at the time. in the 1932 presidential election, roosevelt defeated republican president herbert hoover in a landslide.

explanation:

north east because it has more forest