"Closet partisans" rings true to me. I'm sick of hearing these people interviewed on NPR who claim to be independents and then go on to bash one side or the other. They're a bunch of worthless attention-seekers if you ask me.

The real “swing” doesn’t come from voters who choose between two parties, she argues, but from people who choose to vote, or not (or, if they do vote, vote for a third party). The actual percentage of swing voters in any given national election according to her own analysis is closer to 6 or 7 percent than the 15 or 20 most analysts think are out there, and that larger group, Bitecofer says, are “closet partisans” who don’t identify with a party but still vote with one.