Tucker Carlson, a lifelong Republican and vocal Trump campaigner, now says he won't back either party — a sign of cracking support on the political right.

• Carlson says he can no longer vote Republican, calling the party disloyal for putting a foreign country's interests above Americans'.
• His break matters because he openly campaigned for Trump, so his exit signals wider disillusionment in the MAGA base.
• The anger centers on broken promises: no full release of the JFK or Epstein files, and money flowing to Iran and Ukraine while Americans struggle.
• Critics see Trump burning through political goodwill fast, with bruising midterm losses expected.
• J.D. Vance is named as the likely next flashpoint, distrusted for his ties to big-money donors like Peter Thiel and Palantir.

Outlook: Expect louder talk of the two parties as one "uniparty" and growing pressure on Republicans heading into a rough midterm season.