Are you an academic or journalist interested in using NOMINATE data? Click here to download the data and learn how to use it.
The Senate failed, barely, to secure a two-thirds majority in favor of convicting President Andrew Johnson
Tammy Baldwin (D-WI) became the first openly LGBT senator in 2012.
The Civil Rights Act of 1964 outlawed discrimination based on race, sex, and national origin in employment, accommodation, and education.
Explore current and historical political parties, map party control, and learn about polarization.