For the primary election, some people support it and some people oppose it. Nat Persili, a professor at the University of Pennsylvania Law School, analyzed the reasons. He said:

"The' primary election' looks very democratic, because ordinary party member can participate more in this system and avoid cheating within the political party. However, we found that although letting more people vote can make political parties more democratic, the reality is that the nomination of presidential candidates within the party was basically determined after the primary elections in the first few States such as Iowa and New Hampshire. In a sense, when most States in the United States hold primary elections, the candidates have been selected, which means that many voters cannot effectively vote to decide who to choose as the presidential candidate of a political party. "