Explore current and historical political parties, map party control, and learn about polarization.
Are you an academic or journalist interested in using NOMINATE data? Click here to download the data and learn how to use it.
Visualize the 117th Senate and its members, and compare it with past congresses
Explore the votes of Hiram Rhodes Revels, the first African-American man elected to the Senate
Tammy Baldwin (D-WI) became the first openly LGBT senator in 2012.
