Asklemmy

I have read about individuals doing this, but to my knowledge it has never happened in any sufficient numbers to tilt a primary in any state.

Some states run open primaries, so that any person can vote in any (but only one) primary. Other states run closed primaries, such that any voter who has registered as a member of that party can vote in that particular party’s primary. Yet others (eg, California last time I checked) have mixed modes. I believe the CA GOP primary is closed by the Democratic primary is open.

You can tell relatively easily by the number of votes in any given primary election whether they’re consistent in terms of turnout with previous years. As far as I’ve ever read, they tend to be year over year consistent. The one trend that has been noted in recent years is a small but as far as I know steady increase in independent voters (who as stated may or may not be able to vote in primaries depending on their state, but based on number of votes cast do not seem to have been a deciding factor in primary votes).

I generally have suspected that the idea of people switching parties to act as primary spoilers is largely just projection, as we tend to expect malfeasance of the Other, but the hard truth is that you can barely get large numbers of people to vote in actual elections, much less in something like a primary.