Huffington Post has this article by Harry Kresky and Tiani Coleman, urging that the government exert more control over political parties. The analysis simply assumes that the voters are never going to replace either the Democratic Party or the Republican Party with a new major party. The analysis therefore assumes that the only hope for more democratic control over the government is to force those two parties to be more internally democratic.
The article would be better if it mentioned the fact that voters in France this year formed a new party, and then put it into power. Similar events have happened in Canadian provincial elections, and in many Latin American countries. The United States signed the Helsinki Accords, and all the nations that signed pledged that they would not merge any political party with the government.