Each candidate leads in states considered “safe” for their party. In safe GOP states, Romney leads by 8. In safe Democrat states, Obama leads by a massive 22 points. But, in the more numerous and more important “toss up” states, Romney leads by 4, hitting the critical 50% threshold.

In the slightly different category of “battleground” states identified by Politico, Romney leads by 2, 49-47. Romney’s lead over Obama is powered primarily by his edge with independents. Romney leads Obama by 4 among the important swing voters. By 11 points, these voters think Romney would do better on the economy than Obama, 51-40.

Romney also has a big edge with middle class families, who prefer him over Obama by 15 points, 56-41.