Democrats have put their House majority at risk in 2020 because they have motivated President Donald Trump's base to come out and vote for him, according to Trump pollster John McLaughlin.

"Yes," McLaughlin told Sunday's "The Cats Roundtable" on 970 AM-N.Y., when asked if Democrats are in danger of losing the House. "It's likely because what they've done so far is motivated Trump voters to come back out from 2016, So, if those Trump voters come back out in 2020 that voted for him in 2016, plus if he broadens his base in 30 districts Democrats are sitting in right now that President Trump carried in 2016."

McLaughlin noted Republicans only need to flip 20 seats of those "already 30 endangered Democrats" to regain the House.

"The impeachment backfired; the president's job approval [is] moving up," McLaughlin told host John Catsimatidis, pointing to polls that measure "likely voters."

"The ones that have likely voters, like Rasmussen, they have his job approval at or about 50%," McLaughlin said. "If he gets over 50%, he's going to get re-elected, because that's what Obama had in 2012. He had 51%, and got 51% on election day. That's what George W. Bush in 2004 had on election day: 51% job approval; he was re-elected with 51%. That's why the Democrats are panicking."

As for the Democratic primary in picking who will challenge Trump and lead their party on the ballot, it is a two-candidate race between Pete Buttigieg and Sen. Bernie Sanders, I-Vt., heading into the New Hampshire primary Tuesday, according to McLaughlin.

"In the polls that came out this week, it looks like that it's going to be a two-way contest again between Sanders and Buttigieg," McLaughlin said. "Buttigieg will be the moderate candidate, and Sanders will be the very liberal candidate and the choice of the socialists."