i don't vote in the primary.
i just wait and vote against whoever is in office at the moment.
if it's a situation wehre the incumbent isn't seeking reelection, i vote for whoever's ads on tv and the radio annoy me the least.
because let's face it - all these people are the same sort of scum, no matter which flag they fly. i've noticed that the one screaming loudest about how great he is and how corrupt is opponent is typically the worst choice.
so i vote for whoever slings the least mud if there is no one to vote out...