Pollsters don't typically report their expected turnout, but any number of polls are showing Democratic candidates doing better among registered voters than likely voters. The higher the turnout, the more the electorate will look like profile of registered voters, which could be decisive for who wins Iowa and Senate control.

Virginia early voting turnout data point in a similar direction as the polls that Democratic gubernatorial candidate Terry McAuliffe is doing substantially better than the Democratic ticket did four years ago.

Pew reports today that among people who say they already voted, Obama has a 19 point lead. That's not a small cohort, either.