You're ready to vote, you've been following the campaign, you've got your candidate all picked out, but... are you registered to vote? I'm sure it's on your "To Do" list, so here's a little deadline cheat sheet. The good folks over at Rock the Vote have put together a list of the last possible day you can register and still vote in your state's primary. Not, um, sure when that is either? Check out this list — and make sure you pencil in a little time on the ol' schedule to make your voice heard.