The two largest political parties in Taiwan currently adopt the ”closed primary system,” which calls to question the fairness of the primary elections. Consequently, some people suggest adopting the U.S. style ”open primary system,” but primary election system inside U.S. political parties is a particular and political cultural outcome. The political affiliation of an U.S. political party is more loosely formed, whereas most political parties in Taiwan are more rigidly formed. Transplanting the ”open primary system” to Taiwan may not necessarily eliminate corrupt practices during party primary elections. The way Taiwan's political party administers ”closed primary election” is more similar to the political parties in European nations, wherein political parties exercising ”self-discipline” win votes, and any irregularies in the primary election will result in voter alienation and due retrospection.