Explore current and historical political parties, map party control, and learn about polarization.
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The 42nd Congress voted 115-65 to establish Yellowstone, America's first national park -- despite concerns surrounding federalism
Joseph Rainey (R-SC), born into slavery, was the first African-American elected to the House of Representatives.
The Voting Rights Act of 1965 prohibited racial discrimination in voting by protecting voting rights. It banned poll taxes and literacy tests and required states with historians of Jim Crow discrimination to seek advance clearance before changing and requiring states with histories of Jim Crow discrimination to obtain advance clearance to change laws governing voting.