Ohio: 103,481Virginia: 115,910Colorado: 113,099Those four states, with a collective margin of, 406,348 for Obama, add up to 69 electoral votes. Had Romney won 407,000 or so additional votes in the right proportion in those states, he would have 275 electoral votes."
The 400,000 Votes That Tipped the Election - Guy Benson
"Florida: 73,858
