Explore current and historical political parties, map party control, and learn about polarization.
Use the 'tabular view' to quickly check NOMINATE scores
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 115th Senate and its members, compare it with the past
The Senate's attempt to repeal the Affordable Care Act narrowly failed due to a surprise defection by Sen. John McCain
