The lone Virgil Goode campaign sign on a stretch of Virginia road was far outnumbered by placards promoting Mitt Romney. That Goode's sign was there at all in this pivotal state served as a reminder that plucky third-party candidates like the Constitution Party's nominee could muck up the works on Election Day. Libertarian Party candidate Gary Johnson is daring unsatisfied voters to "waste" their vote on him in the 48 states where he's on the ballot.