If Republicans want to win then I'd pick Brian Sandoval/Susana Martinez it's shocking their names aren't even in consideration for 2016. Their perfect young, Latino, moderate, popular in blue states I don't even see Clinton topping this ticket.
I don't think it helps that they're pro-choice (Sandoval definitely is).
Still it's only 2014 they could just be biding their time for all we know.
Of course and that's why this is only a fantasy realistically they'll never be at the top of the ticket but Sandoval being pro-choice would dismantle the War on Women rhetoric and make it easier for Republicans to win.
Considering that polls recently say more people are now pro life, and the need to attract Hispanics, he would probably change positions, but I get where you are going at. It would help in the Northeast for sure.