WASHINGTON (AP) — Republicans have taken control of the U.S. Senate and are fighting to keep their majority in the U.

S. House, which would produce a full sweep of GOP power in Congress alongside President-elect Donald Trump in the White House. A unified Republican grip on Washington would set the course for Trump's agenda .

Or if Democrats wrest control of the House, it would provide an almost certain backstop, with veto power over the White House. Trump, speaking early Wednesday at his election night party in Florida, said the results delivered an “unprecedented and powerful mandate” for Republicans. He called the Senate rout “incredible.

” And he praised House Speaker Mike Johnson , who dashed from his own party in Louisiana to join Trump. “He's doing a terrific job,” Trump said. Vote counting in some races could go on for days, and control of the House is too early to call.

The rally for Republicans started early on election night in West Virginia, when Jim Justice, the state's wealthy governor, flipped the seat held by retiring Sen. Joe Manchin. From there, the Republicans marched alongside Trump across the Senate map.

Republicans toppled Democrat Sen. Sherrod Brown in Ohio, the first incumbent senator to fall, with GOP luxury car dealer and blockchain entrepreneur Bernie Moreno. They chased Democrats in the “blue wall” states of Pennsylvania, Michigan and Wisconsin, where Vice President Kamala Harris strained to carry the party forward.

Democratic effort.