No. Obama won by 313 to 225 electoral votes. Florida had 29, Ohio 18, and Virginia 13. If you switch all three states to Romney then Romney would have won 285 to 260.
Sorry, I was looking at the wrong page while I wrote that. But the greater point stands -- swinging Florida, Ohio, and Virginia would not have swung the election.
No, the parent was correct. 313 to 225 was Nate Silver's prediction (note "Forecast"). The actual electoral vote was (assuming Obama won Florida) 332 to 206.
