I mentioned in August 2007 that because we can't have a negative vote to get rid of a person from our own party (I still have Ted Stevens on the top of my list), and we're not going to have sortition anytime soon, the only real protest vote you can cast after the primary is to leave one blank.
I haven't decided which one I'm going to leave blank this time around. I'm sure it won't be Sununu, but all the others are still up for grabs. I'm not thrilled with Jeb Bradley - but I really want Carol Shea-Porter gone. I don't mind Lynch, but I am quite partial to Kenney. I doubt I'll leave the top of the ticket blank, but you never know.