Explore current and historical political parties, map party control, and learn about polarization.
As Joe Biden is inaugurated as America's 46th President, browse his votes as a U.S. Senator
The House of Representatives voted 421-1 to authorize the use of military force against the perpetrators of the September 11th attacks
In 1997, the Senate voted 95-0 to restrict entry of the U.S. into future international climate treaties, ending hopes for legally binding emissions targets for the U.S.
The 42nd Congress voted 115-65 to establish Yellowstone, America's first national park -- despite concerns surrounding federalism
