Kentucky Sen. Mitch McConnell announced he would step down from his leadership post earlier this year, ending his historic run.

The incoming Senate Republican majority made their very first major move, electing South Dakota Senator John Thune as their next leader. The Washington Post's Rhonda Colvin reports from the Capitol.

An automatic recount has been triggered in the U.S. Senate race in Pennsylvania between Bob Casey and Dave McCormick. Here's how the recount will work.