Mitt Romney's presidential campaign is making a last-minute push in two states that should be safe for Obama: Pennsylvania and Minnesota.

Romney campaigned in Pennsylvania on Sunday and goes back to the Keystone State on Election Day. Republican running mate Rep. Paul Ryan campaigned in Pennsylvania Saturday and in Minnesota on Sunday, and the campaign's up with ads in both states.

Is this a head fake by the Romney campaign, or do they see the tightening public opinion polls in both states as evidence they might be able to turn Pennsylvania and Minnesota from blue to red?

The Romney campaign says it's playing offense. The Obama campaign says the move is a sign of desperation by the Romney campaign. We'll find out who's right on election night.