Trump has long wielded his endorsements as a cudgel to purge the Republican party of those he clashed with, such as former Rep. Liz Cheney.

I don’t understand how this works out well for the president of the United States," said CNN data chief Harry Enten.

Top Senate Republicans are ratcheting up pressure on President Donald Trump to pick a side in the party’s nastiest primary battles before it’s too late, with anxiety spiking as the midterm cycle threatens to turn sour for the GOP.

Sen. John Curtis said he opposes Jeremy Carl for a State Department post in part because of his "anti-Israel views and insensitive remarks about the Jewish people."

President Donald Trump has escalated a feud with the National Governors Association chair over who gets invited to White House events.

Sen. Mike Lee, R-Utah, leads the campaign to win 50 Republican votes for a conservative voter ID bill, but Senate Democrats plan to block the SAVE America Act in Congress.

GOP Rep. Don Bacon supports a Democrat-led constitutional amendment to create congressional oversight of presidential pardons following President Trump’s recent NFL pardons.

Texas Atty. Gen. Ken Paxton is stepping up his race for the U.S. Senate with early voting about to begin in his state