Polls close in 4 more states
Polls have now closed in California, Idaho, Oregon and Washington.
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 California, Idaho, Oregon and Washington.
ABC News can project that Democrat Josh Shapiro will win against Republican challenger Doug Mastriano for Pennsylvania governor.

ABC News can project that Republican J.D. Vance will win the Ohio Senate seat against Democratic challenger Tim Ryan.
ABC News can project that Democratic New Hampshire Sen. Maggie Hassan will win against Republican challenger Don Bolduc.
"If you take a look at the exit polls, this was significant to moderate voters," ABC News Live Prime anchor Linsey Davis said. "[Hassan] actually outperformed herself from the election in 2016. ... This is obviously somebody who prides herself on being one of the most moderate senators that there is."
Read more about the race here.