What is the difference between open and closed primaries?

Quick Answer. Open primaries allow voters to vote in the primaries of any party, while closed primaries only allow them to vote in the primaries with which they are affiliated. read more

Open primary versus closed primary doesn't make too much of a difference in the end — fringe candidates may see slightly higher support in open primary states, but it rarely amounts to a significant change in the race. However, as Super Tuesday comes up, it's still a good feeling to know the difference. read more

An open primary is where the voter can cast their vote for any party and don’t need to declare party affiliation. A closed primary limits voters to registered party members, who must declare their party affiliation in order to vote. read more