open primary

In Illinois, you don't register under a party, so it's kind of an open primary.

Had Pelosi gotten her way, Harris would have had to duke it out with Democrats in an open primary.

An open primary would have involved a number of Democratic candidates competing to be elected by party members to succeed Biden as their White House nominee.

Colorado Voters First’s initiative would open primary elections to all candidates.

The new constitution proposed a radical change: Eliminate open primary elections and replace them with closed caucuses.