In an interview with MSNBC's Hallie Jackson on Monday, Sen. Susan Collins (R-Maine) would not say if she believed President Trump would be the Republican nominee for president in 2020.



"Well, I didn't support the president when he was our party's nominee," Collins said of the 2016 election. "That was a very difficult position for me to take. I'd never taken it before. Instead, I wrote in the name of Paul Ryan. And that was very hard for me to do, as a life-long Republican."



"Well, it's far too early to tell now. There is a long ways between now and that point," she said of 2020.





JACKSON: Given your concerns about that, Senator, at what point, though, given what we've heard from your Republican colleagues, too, does that talk turn into action?



At what point, if any, do you not support, for example, his renomination?



COLLINS: Well, I didn't support the president when he was our party's nominee. That was a very difficult position for me to take. I'd never taken it before. Instead, I wrote in the name of Paul Ryan. And that was very hard for me to do, as a life-long Republican.



JACKSON: So what happens?



He is already running for re-election.



What happens next?



COLLINS: Well, it's far too early to tell now. There is a long ways between now and that point.



JACKSON: Do you think he will end up the party's nominee in 2020?



COLLINS: It's too difficult to say.