Catherine Cortez Masto’s victory in Nevada clinched the chamber for Democrats.
The 2022 midterm elections shaped up to be some of the most consequential in the nation's recent history, with control of Congress at stake.
All 435 seats in the House and 35 of 100 seats in the Senate were on the ballot, as well as several influential gubernatorial elections in battleground states like Arizona, Georgia, Pennsylvania and Wisconsin.
Democrats were defending their narrow majorities in both chambers and retained control of the Senate, though control of the House isn't yet clear. But a Republican flip of the lower chamber would be enough to curtail most of President Joe Biden's legislative agenda and would likely result in investigations against his administration and even his family.
Polls have now closed in 15 states, plus D.C.: Alabama, Connecticut, Delaware, Florida, Illinois, Maine, Maryland, Massachusetts, Mississippi, Missouri, New Hampshire, New Jersey, Oklahoma, Rhode Island and Tennessee.
ABC News can project that Sen. Rand Paul, R-Ky., will win against Democratic challenger Charles Booker in his bid for reelection in the Senate.
ABC News can project that Republican Ohio Gov. Mike DeWine will his reelection bid against Democratic challenger Nan Whaley.
Polls have now closed in North Carolina, Ohio and West Virginia.
