Social science data repository.
Polling question results from the US since 1935 from all of the major polling organizations.
Resource for the study of campaign finance and ideology in American politics. The DIME+ data repository on congressional activity extends DIME to cover detailed data on legislative voting, lawmaking, and political rhetoric.
The CCES is a 50,000+ person national stratified sample survey administered by YouGov. The survey consists of two waves in election years.
Data and statistics generated by United States research from departments and agencies.
Produces a number of publications reporting primarily federal government.