Democrats have swept Congress. Democrats will take control of the U.S. Senate, according to projections from CBS News and NBC News, flipping the chamber on a night when the party also won back the House.

The results hand Democrats control of both chambers of Congress for the final two years of President Donald Trump’s term.

Heading into Election Day, Republicans held a 53-47 majority, meaning Democrats needed a net gain of four seats to take over. They got there with a string of major upsets across the map, including in states Republicans have long counted as safe.

The biggest headline came out of Texas, where Democrat James Talarico flipped a Senate seat in a state that hasn’t sent a Democrat to the Senate in decades. Democrats were also projected to pick up seats in North Carolina, South Carolina, Ohio, Kansas and Iowa, with Adam Hamilton winning in Kansas and Josh Turek winning in Iowa. In Georgia, Sen. Jon Ossoff held his seat, and Democrats also held on in New Hampshire.

The new majority carries real power. With the Senate in hand, Democrats can block Trump’s nominees, including potential judicial and Cabinet picks, and decide which bills reach the floor for a vote. Paired with the new House majority, where Hakeem Jeffries is in line to become the first Black speaker in history, Democrats now hold the power to set the agenda in Washington and serve as a firm check on the White House.

Trump congratulated Democrats on their wins during an election-night call with CBS News.

The final size of the Democratic majority is still to be determined, with votes still being counted in several races. But the outcome is already clear: a dramatic shift in power that will shape the rest of Trump’s presidency and the road to 2028.