This is how a struggling campaign ends: Looking for a come-from-behind miracle in an unlikely place. That’s what drew Mitt Romney to Bucks County, Pennsylvania, on a bitterly chilly night before the election.

The key to a Romney victory and the state’s 20 electoral votes will be massive turnout in counties like this one to offset the Democrats’ strength in Philadelphia and Pittsburgh. And as thousands flocked to the campaign rally, Republicans could hold out hope that they could do it.