A particularly awkward moment unfolded Monday on MSNBC when anchor Thomas Roberts insisted to Bernie Sanders backer Nina Turner that she had become a supporter of Hillary Clinton, to which Turner coolly replied they never had such a conversation.

It was unclear whether Roberts was mixing Turner up with another person or simply did not remember earlier interviews clearly.

Turner, a former Ohio Democratic state senator, was a strong supporter of Sanders during the Democratic primary and says she has not gotten behind Clinton's candidacy. However, Roberts appeared to think she had been on his show before to discuss supporting Clinton over Donald Trump.

"I know that you were a super Bernie Sanders supporter," Roberts said. "In light of this [email story] and the fact that did you get on board and back Hillary Clinton, does any of this make you regret that decision?"

Turner started interrupting before his question was over.

"Thomas. Thomas. I'm not backing anybody in this general election," she said. "Let me clear that up right away. I am backing the American people. That's who I'm backing."

Turner bemoaned the "drama" besetting the election, but Roberts was not done.

"But I've had you on the show earlier, and you talk about wanting Hillary Clinton over Donald Trump, so how do you say that you're not a Hillary Clinton supporter?" he asked.

"You had me on the show earlier?" Turner asked, her voice rising. "You need to go back and roll the tape, Thomas. Not me. Maybe it was somebody else. We've never had that conversation."

After Turner reeled off the issues she wished were at the forefront of the campaign, the interview came to an uncomfortable end.

"This is just Monday. This is not a Freaky Friday," Roberts said, in apparent reference to his earlier mistake. "So, I'm just going to have to leave it there with you, Nina."

Turner appeared to take it in stride, chuckling as she said farewell.