WASHINGTON (Reuters) - U.S. President-elect Donald Trump's Republicans on Tuesday inched closer to winning a majority in the House of Representatives and with it full control of Congress, which would give Trump power to advance his agenda when he returns to the White House in January.

Republicans are four seats from keeping their razor-thin majority in the House of Representatives, but Democrats are leading in five undecided Southern California races. GOP has 214 of the 218 seats they need for a majority in the House,

WASHINGTON—Republicans seized control of the Senate and looked in position to narrowly keep power in the House, setting President-elect Donald Trump up to more easily confirm nominees and muscle through key priorities on taxes and other issues.

Republicans appear on track to maintain their control of the U.S. House of Representatives in the new year, though yet again a narrow majority looks likely to cause headaches for GOP leaders.

President-elect Donald Trump will meet with House Republicans on Wednesday as the party awaits the prospect of scoring a trifecta in Washington with control of both chambers of Congress and the White House.

Data provider Decision Desk HQ projected on Monday that President-elect Donald Trump's Republican Party had won a majority in the U.S. House of Representatives, which would signal that Republicans would hold a majority in both chambers of Congress.