According to Matthew Dowd we have a "hot" electorate and the "temperature" of candidates is important. Especially in the Tea Party dominated Republican party, "Passion" is the watchword. "Cool" Presidential contenders just don't cut it. Republicans think the time is right. They see a chance to throw Obama out of the Lincoln bedroom but on the other hand they don't want to end up getting it on with the Manchurian candidate.
So far I think each of the Republican presidential contenders have given the Republican base voters good reason to let the moment pass, change their front door locks, and sign up for another dating service.
Take Herb Cain, as Palin called him, "the flavor of the week". His staying power is at issue. But frankly any guy who thinks he's going to get laid after giving his date pizza for dinner is a loser whether or not he owns the pizza company. Stop him at the door.