Political Science

For Presidential and Congressional races. Back to 1982 (downloadable in Excel from 2004+)

Includes historical election results and an electoral college calculator, which allows you to choose winning parties by state and see how the overall electoral votes will tally.

"A searchable database of historical election information, all from official source documents"

Presidential, Congressional, & Gubernatorial election statistics, 1954 to 2006.
Davis FamilyLibrary Reference JK1967.A8 

'Data on Americans' social backgrounds, enduring political predispositions, social and political values, perceptions and evaluations of groups and candidates, opinions on questions of public policy, and participation in political life.' (from IPCSR description).
Also on CD-Rom (1948-1997) Davis Family Library Stacks JK1967 .A82 or download from ICPSR (1948-2000)

Aggregates official election results from all 50 states + DC from 1860 to present (once available). Free access for state and national level data and maps. County and congressional-district maps are free. For county data, see a librarian for password-protected access to our purchased datasets.

From the Office of the Clerk, U.S. House of Representatives.  1920 - present.
Alternate title (non-Presidential election years): Statistics of the Congressional Election of [year].

Available from theTufts Digital Library, A New Nation Votes is a searchable collection of election returns from the earliest years of American democracy.

National voter turnout rates back to 1787 along with state voter turnout rates 1980+ and some early voting statistics.

E-book. Some older issues in print.

This is an advanced keyword seach of the subject field for elections and statistics.  Also browse Main Library Reference JK274 - Jk2447

From IDEA: Institute for Democracy and Electoral Assistance. Provides a 'global collection of political participation statistics.'

Basic country information (similar to Europa) including background, statistics, recent election results, government officials, etc.
Print: Davis Family Library Reference JA51 .S7 (latest). Earlier volumes in Stacks (back to 1866 with some gaps).

More resources can be found on this library guide by Jeremy Darrington, Politics Librarian at Princeton.