美国的两大初选将所有候选人集中在一个选举中. California's top-two primary forces all candidates onto one general election ballot.

美国加利福尼亚州的两大初选制度消除了党派初选,迫使所有候选人投一张单一的大选票. California's top-two primary system eliminates party primaries, forcing all candidates onto a single general election ballot. 批评人士认为,这迫使大选选民在两名候选人之间进行选择,而不是由公众选择的政党精英. 这样可以减少真正的选民选择. Critics argue this forces general election voters to choose between two candidates often selected by party elites rather than the public, thereby reducing genuine voter choice.