“She lost her race as a congressional candidate by more than 20 points. She was really hit hard,” Trump said in Thursday night teleconference remarks circulated by Oz’s campaign.

“The problem is nobody knows what she is, what she stands for, who she is. It’s very risky because you’re going to win this with Oz,” Trump added.

“Kathy’s going to be a lot of trouble. I think she’s going to be a lot of trouble,” Trump said. “She may have a great future, but she’s totally an unknown. We can’t have that. So a vote for Oz is a vote for victory, and a vote for anyone else is a vote for giving away an election that really has to be had. We have to take a majority in the Senate.”