Republicans have won full control of Washington, but Democrats will retain two key levers of power to shape legislative outcomes in Donald Trump’s second term.

With votes still being counted, here's a look at the key races that remain uncalled by the NBC News Decision Desk (read more on how those races are called on NBCNews.com).

During a speech introducing Donald Trump, Sylvester Stallone called the president-elect 'the 2nd George Washington.'

The visit is a traditional part of the peaceful handoff of power — a ritual in which Trump himself declined to participate four years ago.

Trump was looming over the Senate majority leader three-way race. Musk and other Trump allies, including Tucker Carlson, backed Sen. Rick Scott (R-FL), who has close ties to the president-elect’s incoming chief of staff, Susie Wiles. Scott was an insurgent candidate facing Thune and John Cornyn of Texas.

Voters have given the once-fractured House GOP a second chance at leading by delivering Republicans another razor-thin House majority in the 2024 elections

Back in Washington for the first time since his election victory, Trump tells House Republicans that 'it's nice to win'

Returning lawmakers will be choosing the leaders for the next Congress and finishing work on the remaining priorities of the outgoing 118th Congress.

Sylvester Stallone has described Donald Trump as the “second George Washington” in a warm up speech for the President-elect at Mar-a-Lago. The Hollywood heavyweight attended a black tie gala on Thursday to celebrate Trump’s election victory that was attended by many of his cabinet picks, including RFK Jr and Matt Gaetz.

Republicans have secured their monopoly on power in Donald Trump’s new Washington, retaining their majority in the House of Representatives, CNN projected Wednesday, after picking up seats in California and Arizona and ushering in a dramatic new era of right-wing populist rule.

Republican Dan Newhouse wins reelection to U.S. House in Washington's 4th Congressional District.