Senate Minority Leader Chuck Schumer, D-N.Y., said Sunday that Republicans should be worried about their chances in the 2020 cycle after the “rout” they suffered Tuesday at the hands of Democrats, who are headed for their largest gains in the House since 1974.

Democrats appear poised to lose one to two seats in the Senate, depending on whether Rep. Kyrsten Sinema, D-Ariz., maintains her lead in the Arizona Senate race. Sen. Bill Nelson’s re-election bid against Republican Rick Scott in Florida is headed for a recount, and Mississippi’s Senate race is set for a Nov. 27 runoff.

“I’d be very worried for Republicans in 2020 elections if all they can claim is they won in North Dakota,” Schumer said on CNN’s "State of the Union."

Pressed on if Democrats couldn’t get their message right in the three "Trump" states in which they lost incumbents, Schumer said “nothing could be further from the truth.”

Prognosticators thought Democrats would lose 8-10 seats, Schumer said. Instead, Democrats won six of the 10 Senate races in states President Trump won in 2016, Schumer added.

Democrats could gain as many as 40 seats in the House if a handful of the outstanding races swing their way, the largest gain for Democrats in the House since the 1974 election after the Watergate era. As it stands, Senate Democrats have lost two seats, but if the outstanding races turn toward Democrats, they would lose a net zero seats.