I guess we could make our own? I did once. You simply print out what you want to say on your printer, landscape so it’s 11 inches wide, then ensconse it in clear duct tape and trim. Then tape that onto your tailgate.
I live in Utah, so I think might be the best idea. This state will go Romney in the primary. There's gotta be a phrase that will attract Mitt voters rather than repel them after the primaries. Anti-Zero is the ultimate goal, and that's the tack I'll pursue.