The Senate's attempt to repeal the Affordable Care Act narrowly failed due to a surprise defection by Sen. John McCain
The U.S. Senate unanimously voted to pass what would become the 26th Amendment, lowering the voting age to 18.
Explore current and historical political parties, map party control, and learn about polarization.
Learn about LBJ's career in the Senate and explore key votes
The Senate failed, barely, to secure a two-thirds majority in favor of convicting President Andrew Johnson
