President Donald Trump's tightening grip on his party could make it harder to win in the November midterms, when Republicans face a broader electorate that has soured on the president's second term and the economy.

PLANO, Texas (AP) — Texans are choosing a Republican nominee for U.S. Senate in Tuesday’s runoff election, bringing to a close the extended, bitter and expensive primary where…

President Donald Trump abandoning Sen. John Cornyn destabilizes the White House's already-rocky relationship with Senate Republicans.