“Somebody on that team was a genius”
And somebody on Romney’s team was not.
Romney’s high-tech GOTV system (Orca) imploded on election day, effectively suppressing his own vote (Breitbart had an article on it a ways back)
If you look at the numbers, it probably cost Romney FL, OH, VA and a couple other states. Not enough to put him over the top popular vote-wise, but enough to give him an undisputed if slight win in the electoral college. Which is what matters.