Are you denying the common usage of crossover "strategic" voting in primaries to make sure the other party's weaker candidate goes to the general election?
For voter-nominated offices—which include the Governor, state legislators, and U.S. Senators and Representatives—California uses a "Top-Two Candidates Open Primary"
How it works: All candidates, regardless of their party preference, are listed on a single ballot. Every registered voter receives this exact same ballot, no matter which party the voter belongs to.
- Because everyone shares one ballot, strategic voting is common. Opponents can intentionally rally behind a weaker candidate from the opposing party to push them into the top two slots, successfully knocking a stronger opponent out before the general election.
Maybe you are simply ignorant.