Ms. Rosen, the low-key incumbent, hung on, but the race was closer than expected amid President-elect Donald J. Trump’s strength.

Sen. Jacky Rosen won her reelection race against Republican challenger Sam Brown to serve a second term as Nevada's junior senator.

Jacky Rosen won reelection in the battleground state of Nevada, overcoming a challenge by Republican Sam Brown. Rosen, who was first elected in 2018, used her sizable cash advantage over Brown to run ads framing her opponent as an anti-abortion extremist and political carpetbagger who only moved to the state in 2018.