Sen. Lindsey Graham (R-S.C.) had some harsh words for Donald Trump -- and for those supporting him -- Sunday morning on ABC's This Week with George Stephanopoulos.

The two presidential candidates have had a heated week with Trump even publicly giving out Graham's cell phone number during a campaign stop, so it wasn't surprising that Graham took the opportunity to speak out his opponent.

“He’s appealing to the dark side of American politics. He is not offering solutions to hard, complicated problems. He is basically selling fear and prejudice," Graham said.

Stephanopoulos asked, if that's true, “Why’s he doing so well?”

Trump leads in nearly every poll and in many polls he is ahead of the closest competitor by double digits.

“There’s a market in both parties, if you say outrageous things. There’s a market in my party for people," Graham responded.

"If you say that Obama's not born in America, that he’s actually born in Kenya, there are people who want to believe that. If you say most illegal immigrants are drug dealers and rapists, there are people that want to believe that.”

Watch the clip below:

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