Executive

The White House  http://www.whitehouse.gov/

Judiciary

Supreme Court of the United States  http://www.supremecourtus.gov/
 

Legislative

US House of Representatives  http://www.house.gov/
Clerk of the House  http://clerk.house.gov/
Currently on the House Floor  http://clerk.house.gov/floorsummary/floor.php3
US Senate  http://www.senate.gov/
US Senate Calendar of Business  http://www.gpoaccess.gov/calendars/senate
THOMAS:  Check legislation status.  http://thomas.loc.gov/
Congressional Information  http://congress.org/
Congressional Record  http://www.gpoaccess.gov/crecord

Other Government Resources

Federal Election Commission  http://www.fec.gov/
Federal Register  http://www.archives.gov/federal_register
Government Printing Office  http://www.gpoaccess.gov/
The Library of Congress  http://www.loc.gov/
FirstGov  http://www.firstgov.com/
US Census Bureau  http://www.census.gov/

Political Parties

Democratic National Committee  http://www.democrats.org/
Senate Democratic Conference  http://democrats.senate.gov/
Democratic Senatorial Campaign Committee  http://www.dscc.org/
House Democratic Caucus  http://www.house.gov/demcaucus
Democratic Congressional Campaign Committee  http://www.dccc.org/
Republican National Committee  http://www.rnc.org/
Senate Republican Conference  http://src.senate.gov/
National Republican Senatorial Committee  http://www.nrsc.org/
House Republican Conference http://www.gop.gov/
National Republican Congressional Committee  http://www.nrcc.org/

Media

ABC News  http://abcnews.go.com/
CBS News  http://www.cbsnews.com/
CNN  http://www.cnn.com/
C-SPAN  http://www.c-span.org/
The Hill  http://www.hillnews.com/
Los Angeles Times  http://www.latimes.com/
NBC News  http://www.msnbc.com/
The New York Times  http://www.nytimes.com/
Roll Call  http://www.rollcall.com/
USA TODAY http://www.usatoday.com/
The Wall Street Journal  http://www.wsj.com/
The Washington Post  http://www.washingtonpost.com/