Pollster Emily Ekins said on Monday that Democrats are concerned that if they are too aggressive in impeaching President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE ahead of the 2020 election, they run the risk of making him sympathetic.

"I think a lot of these Democrats realize that if they go too far on the offensive, they're going to make Trump appear like a victim," Ekins, polling director at the Cato Institute, told Hill.TV's Jamal Simmons on "What America's Thinking."

"Going into 2020, that's actually not going to go well for the Democrats," she continued. "So I think some of them want to back off for this reason."

Speaker Nancy Pelosi Nancy PelosiPelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare House lawmakers reach deal to avert shutdown Centrist Democrats 'strongly considering' discharge petition on GOP PPP bill MORE (D-N.Y.) made news last week when she told The Washington Post that impeaching Trump was "not worth it" for Democrats.

"Impeachment is so divisive to the country that unless there’s something so compelling and overwhelming and bipartisan, I don’t think we should go down that path, because it divides the country,” she said. “And he’s just not worth it."

Multiple progressive lawmakers, including freshman Reps. Alexandria Ocasio-Cortez Alexandria Ocasio-CortezHouse passes bill to avert shutdown Trump attacks Omar for criticizing US: 'How did you do where you came from?' The Memo: Dems face balancing act on SCOTUS fight MORE (D-N.Y.) and Rashida Tlaib Rashida Harbi TlaibTrump attacks Omar for criticizing US: 'How did you do where you came from?' George Conway: 'Trump is like a practical joke that got out of hand' Pelosi endorses Kennedy in Massachusetts Senate primary challenge MORE (D-Mich.), have called for moving forward with impeaching Trump.

Trump last year warned voters ahead of the 2018 midterms that Democrats would move to impeach him if they didn't elect more Republican representation in Congress.

“We have to keep the House because if we listen to Maxine Waters, she’s going around saying ‘We will impeach him,’ ” Trump said at a Michigan rally last year, referring to the California Democrat.

— Julia Manchester