From SurveyUSA via Fivethirtyeight.com:
SurveyUSA has a lot of good habits as a pollster, and one of them is breaking out the results of early and absentee voting in states where such things are allowed. So far, SurveyUSA has conducted polling in five states where some form of early voting was underway. In each one, Barack Obama is doing profoundly better among early voters than among the state’s electorate as a whole:

