President Donald Trump warned supporters that Democrats would try to impeach him if they took back the congressional majority.

“They like to use the impeach word,” Trump said, referring to Democrats like Rep. Maxine Waters.

The president commented on the threat during a rally in Billings, Montana, on Thursday.

Trump appeared surprised by the notion of impeachment, adding that “haters” in the Democrat party did not care about the good he was doing for the country.

“How do you impeach somebody that is doing a great job?” he asked, pointing to the strength of the economy.

Trump explained that impeachment would be a bad precedent for Democrats to set, particularly if a Republican majority House felt the need to retaliate against a future Democratic president.

“You take that and what you are going to have is a country that is going to turn into a third world country because if the opposite party becomes president, every time before it even starts, before you have found out whether or not he or she is going to do a good job, they will say, ‘We want to impeach him,'” Trump said. “It is ridiculous.”

Trump urged his supporters to vote Republican in the midterms to protect the country’s success.

“I will worry about that if it ever happens,” Trump said. “If it does happen, it’s your fault because you did not go out to vote … it’s the only way it could happen.”