Who senators choose, and whether Trump ultimately endorses a candidate in the final hours, could set the tone for Trump’s attempts to assert control over the legislative branch.

The Republican Party has won the U.S. Senate majority, regaining control for the first time in four years, but who will win the House?

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.