Susan Collins isn't convinced Trump will be the GOP's 2020 nominee

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GOP Sen. Susan Collins (R-Maine) isn't so sure President Trump will be the Republican Party's presidential nominee in 2020. While Trump apparently doesn't think it's too early to start campaigning for 2020 — he's holding a campaign-style rally Tuesday night in Phoenix, after all — Collins said in an MSNBC interview Monday that she thinks it's "far too early to tell now" what the future will hold for Trump.

"Do you think he will end up the party's nominee in 2020?" MSNBC's Hallie Jackson asked. "It's too difficult to say," Collins said.

Collins, notably, did not support Trump as the party's nominee in 2016, and she was one of three Republicans to oppose the party's ObamaCare repeal. At this point, Collins said she is particularly disappointed in Trump's hesitancy to directly condemn white supremacists in the wake of the Charlottesville, Virginia, white nationalist rally. "I think the president failed to meet the standard we should have expected a president to do in a time like that," Collins said.