Trump's endorsement is put to the test in Georgia and other primary races across the US on Tuesday

Lt. Gov. Burt Jones (left) and businessman Rick Jackson (right), who are both running for the Republican nomination for Georgia governor. (Matthew Pearson/WABE)

WASHINGTON (AP) — Is there a future in politics for Republicans who cross President Donald Trump?

The signs this year suggest no, and Trump has convinced his voters to defeat his adversaries again and again. The next test of the president’s power to extract retribution is on Tuesday, when Rep. Thomas Massie of Kentucky faces a Trump-backed primary challenger.

Massie has been a thorn in the president’s side for pushing for the release of the Jeffrey Epstein files, opposing the war with Iran and voting against Trump’s signature tax legislation last year.