We've been reporting from the battleground survey the Republican turnout model, but frankly, our internal work and our internal model would have the Democratic vote - would have the margin more like five, six points, seven points because we believe more new voters, more people of color turning out to vote.

NPR: As Election Day Nears, Poll Data Questioned

Low turnout is not necessarily proof of alienation: a survey for the League of Women Voters found that non-voters are no more mistrustful of government than voters are.

ECONOMIST: Conventions and their enemies

The analysis, based on a sample survey of voters last year, is viewed as the best source of government data on turnout by race and ethnicity.

NPR: A Census First: Black Voter Turnout Passes Whites