Newsom said there's no shot Haley can win the Republican nomination against Trump after the former president swept all four early primary states of Iowa, New Hampshire, Nevada and South Carolina.

He said it's 'beyond me' why Haley wants to stay in the race, but is OK with it because it helps Democrats for a fellow Republican to point out Trump's downfalls.

'She's making points I'm applauding every single day about his temperament, his capacity, his unraveling in real time,' Newsom told NBC Meet the Press host Kristen Welker on Sunday.

He added: 'And so I think she's been incredibly effective, so I hope she stays in, personally.'