Which voting system should the US adopt? Majoritarian Voting is a system in which candidates have to receive a majority of the votes to be elected, although in some cases only a plurality is required in the last round of counting if no candidate can achieve a majority. If no candidate wins a majority in the first round of voting, a run-off election is held among the top contenders. Some states conduct their primary elections within the two major political parties in this way. Proportional Representation an electoral system in which parties gain seats in proportion to the number of votes cast for them. As a result, any given election can have multiple winners, and voters who might prefer a smaller party over a major one have a chance to be represented in government. Debate: Should the US change its electoral rules