This is Mitt Romney’s biggest problem.

Projecting moderation while professing extremism is quite a trick, and Romney may perhaps grasp the brass ring. But he makes everyone uneasy. Moderate Republican voters, of whom there may be more than meet the eye, may worry that President Romney will be captive to a GOP Congress beholden to the base. Tea Party types may worry that he’ll shake the Etch-A-Sketch again when dancing to a different piper, the general electorate and/or a divided Congress. No one, in any case, likes a liar, and people across the political spectrum know that Romney lies from sunup to sundown. Democrats know that nothing he says about Obama is true; conservatives know that nothing he says about his past positions and actions is true; and moderates know, or should know, that he’s betrayed them to the base.

Every politician plays the game, but Romney is just shameless.