General

U.S. Census Voting and Registration from the Current Population Survey
US Census site has estimates of voter turnout and voter registration based on post-election survey data since 1964.

The American National Election Studies (ANES) states as it mission "producing high quality data on voting, public opinion, and political participation to serve the research needs of those who wish to better understand the foundations of national election outcomes."  Among other features, it has a wealth of long-term data in its section on guides to public opinion.

Youth

CIRCLE – The Center for Information and Research on Civic Learning

Women

U.S. Census Voting and Registration – Check the Historical Time Series data for each election.
CIRCLE – The Center for Information and Research on Civic Learning

African American Vote

The National Coalition on Black Civic Participation
Joint Center for Political and Economic Studies

Latino Vote

Pew Hispanic Research
William C. Velásquez Institute (WCVI)
NALEO - National Association of Latino Elected and Appointed Officials
The National Council of La Raza (NCLR)

Asian and Pacific Islander Vote

Asian-American Legal Defense and Education Fund
APIA VOTE

Arab-American Vote

Arab American Institute

Native and American Indian Vote

National Congress of American Indians (NCAI)

Partisan Voting Trends

The New York Times Partisan Voting Trends 1982-2006 and report based on this website.

For More Information

Visit major media websites on our General Voter Turnout page.