Business Insider looks at the Electoral map and finds the 47 votes in Ohio and Florida are crucial to Romney's hopes for the White House.
If he loses Ohio (where he currently trails by 8 points), then Virginia becomes a must-win for Romney. That's a tough prospect as he's trailing there by 4.5% points. Plus, he'd have to get another swing state to get to 270.
What would happen if Romney were to lose both Florida and Ohio? He would have to flip Pennsylvania and Michigan, two states in which the RCP average is at least 8 points. Or he'd have to swing one of those states and Nevada, which leans 3.4 points toward Obama.
Here's a look at the implausible path: