A primary election is a preliminary election that determines a party's nominee for the general election. It influences party selection by allowing registered party members to vote for their preferred candidates, shaping the party's platform and future direction. These elections can be closed, open, or semi-open, affecting who can participate. The outcome often reflects the ideological diversity within a party, as candidates appeal to different segments of their base. Ultimately, primary elections serve as a critical mechanism for democratic participation and set the stage for the overall electoral contest.