I’ve been saying for a while that Mitt Romney’s biggest problem will be his compulsive lying. It’s stunning how he repeatedly changes his positions, and then denies ever taking the previous position.

With that track record, the Obama campaign seems to have come up with an appropriate slogan – “Mitt Romney vs Reality.” The first ad has to do with Romney’s hilarious statement in Cleveland that he deserved plenty of credit for the recovery of the auto industry . . . even though he opposed the bailout. The ad is excellent, though coming up with ads against Romney should be pretty easy.

The ad is pretty good, and it frames the campaign nicely for President Obama. Simply, he inherited a mess, and his decisions have helped the country to move forward. The auto industry bailout is front and center in the ad.

Mitt Romney actually helped the cause this week when he tried to take credit for the auto bailout that he opposed.

The polls are close at the moment, so anything can happen, but Romney’s propensity to make claims that contradict his previous positions will likely undo him in the end.