Incumbent Sen. Jacky Rosen (D-Nev.) and Republican Sam Brown will go head to head Tuesday in the Nevada Senate race. Rosen, a first-term senator, has held a steady lead throughout the cycle, buoyed by a fundraising and spending advantage that has helped keep Brown at arm’s length ever since his primary victory in June.

Results for the 2024 Pennsylvania U.S. Senate Class I general election. Find Pennsylvania and national elections results at BostonGlobe.com.

Republicans, in the minority in both chambers since late 2017, appeared to hold onto key seats in Central Washington even after a redistricting decision was predicted to turn the area for Democrats. Democrats currently outnumber Republicans in the state Senate 29-20 and in the state House 58-40.

The polls have officially closed in Delaware after voters cast their ballots for president and several key races across the state, including possibly historic outcomes for both the Senate and House. C