Flake, who has been promoting a book that’s critical of the president, knows something about getting primaried: Trump has expressed support for Kelli Ward, a former Arizona GOP state lawmaker who is challenging Flake in next year’s U.S. Senate race.
But Flake isn’t the only Republican talking about a competitive Republican primary in 2020.
Earlier this week, Sen. Susan Collins of Maine, who irked the president by not voting for ObamaCare repeal legislation, criticized Trump’s response to the white supremacists involved in the violence in Charlottesville, Va.
Appearing on MSNBC, Collins was asked if she believes Trump will be the Republican nominee in 2020.
“It’s too difficult to say,” Collins said.