Senator Susan Collins (R-ME) has broken rank with her party and Donald Trump before. Now she is implying she may not support his re-election bid in 2020. Here’s the exchange with PBS News Hour’s Judy Woodruff.

JW: Are you at this point prepared to endorse President Trump?

SC: I’m really focused on my own campaign for 2020, and I really haven’t focused on the presidential campaign. So I’m not prepared at this point to make that decision.

JW: But do you expect at some point between now and November of 2020 to endorse the president, since you’re a Republican?

SC: I don’t know. I’m going to have to see what happens between now and then, and look at what his record is. I can’t imagine that I would endorse any of the Democrats who are running right now, but I’m going to focus on 2020 in 2020.

JW: But you’re leaving the door open to perhaps supporting another Republican?

SC: Well, I’m just not focused on it, Judy, right now, so I’m neither ruling it nor ruling it out.

Watch the full interview above.