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.

Sylvester Stallone welcomed Donald Trump to the stage at the President-elect’s Mar-a-Lago event Thursday evening, praising him as the “second George Washington.” The two shook hands before Trump’s headlining speech for the America First Policy Institute gala,

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

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

Donald Trump made a victor’s return to Washington Wednesday morning for the first time since winning the presidential election last week.

After his election win in 2016, Trump met with President Barack Obama in the Oval Office and called it “a great honor.” But he soon was back to heaping insults on Obama, including accusing his predecessor — without evidence — of having wire-tapped him during the 2016 campaign.

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.

There were no protests on the streets as Donald Trump returned to Washington. He visited the nation's capital on Wednesday, a week after emerging victorious in the presidential election.

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).