House races in a state-by-state slog, with many races too early to call

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...