Eh, I don't vote in the primary because I don't get a primary ballot (have to be registered to a major party). I occasionally change my vote to the majority party in my state if there's a candidate I dislike enough. But that's because I live in Utah, and the only primary that matters here is the GOP one (esp. in my district where the GOP gets like 80% of the vote). I remember switching when Mike Lee was up for re-election so I could vote against him twice, and maybe I'll do it again when he's up for reelection again, but I keep my registration w/ a third party because I think juicing their stats is more valuable than voting in either primary.