Obama has lost support among most groups that voted for him in 2012, see what Aaron Blake wrote in The Fix, the WaPo's political blog:
* Obama won women in 2012 by 11 points, according to exit polls; today he leads by one point.Apparently unchanged is Obama's strong support among non-whites and especially African-Americans. This supports my thesis that, for non-white voters, Obama's performance in office is much less important than his election to office. Fearing this casts minorities in a negative light, both WaPo and ABC News fail to report it.
* He has seen his lead among young voters (18-39 years old) drop from 18 percent to 2 percent.
* His four-point lead among those with less than a college degree has flipped to a nine-point deficit.
* Among those making less than $50,000, Obama’s 22-point lead is now three points.
* The biggest drop is among those professing to have no religion. While this group backed Obama by 44 points, it now supports him by a 22-point margin.
* Among liberals, Obama won by 75 points but now leads by 59 percent. One in five self-described liberals (20 percent) say they would vote for Romney.