The Census Bureau is the leading source of quality data about the nation's people and economy.

Congress.gov is the official website for U.S. federal legislative information. The site provides access to accurate, timely, and complete legislative information for Members of Congress, legislative agencies, and the public.

govinfo is a service of the United States Government Publishing Office (GPO). The site provides free public access to official publications from all three branches of the Federal Government. govinfo will replace FDsys.

Official documentary historical record of major U.S. foreign policy decisions and significant diplomatic activity. 1945-1988

CRS provides reports to members of Congress on a variety of topics relevant to current political events. This site provides access to reports in the public domain. Reports can be a valuable resource for reviewing legislatively relevant issues

House floor votes are compiled through the electronic voting machine by the House Tally Clerks under the direction of the Clerk of the House. Senate floor votes are compiled through the Senate Legislative Information System by the Senate Bill Clerk under the direction of the Secretary of the Senate. From 1989 on.

The official website of the Supreme Court of the United States. Provides information about members past and present, Court history, recent decisions, recent arguments, case documents, and other information

The official web site of the United States House of Representatives. Includes legislation and committee information, and biographical information on Representatives.

The official web site of the United States Senate. Includes legislation and committee information, and biographical information on Senators.

The official web site of the White House which provides links to issues, news, brief biographies, and appointments.

Provides information on treaties and other international agreements to which the United States has become a party as of January 1st in its most recent publication year

The website, which takes its name from the number of electors in the United States electoral college,[538 1] is a polling aggregation website created by analyst Nate Silver. The blog focuses on opinion poll analysis, politics, economics, and sports blogging

Documents and data related to the presidency.

Nonpartisan, nonprofit “consumer advocate” for voters that aims to reduce the level of deception and confusion in U.S. politics. We monitor the factual accuracy of what is said by major U.S. political players in the form of TV ads, debates, speeches, interviews and news releases. Our goal is to apply the best practices of both journalism and scholarship, and to increase public knowledge and understanding.

Information provided by the League of Women Voters

GovTrack.us tracks the United States Congress and national legislature. They publish the status of federal legislation and information about your representative and senators in Congress. Use GovTrack to track bills for updates. Govtrack also provides statistical analyses, bill summaries, and other tools to put information in context.

Tracks the influence of money on U.S. politics, and how that money affects policy and citizens' lives.

Political blog, news, polls, discussion forum

This resource guide compiles a list of online and print resources that contain U.S. election statistics for both federal and state elections.