I have accepted that in Massachusetts I will be one of few not voting for Kerry.
Massachusetts is one of those strange states that gives the other party a chance to screw around with your primary. When you go to vote in the primary you get to choose which one to vote in on the spot. No need to be a democrat/republican ahead of time. You can only vote in one of them, but you can choose.
I would think that all the republicans could come out tomorrow and vote for the person they think will lose to W. I'm guessing that most people don't know about the loophole.