WASHINGTON — Kellyanne Conway made a rare admission Sunday for a member of the Trump administration: The president’s poll numbers have taken a hit.

“His approval rating among Republicans, conservatives and Trump voters is down slightly. It needs to go up,” Conway told ABC’s “This Week.”

Trump has dismissed negative polling in the past as “fake” and said the media surveys cannot be trusted.

But Conway, a pollster by trade, said the base is urging Trump to get some wins on his campaign promises.

“They are telling him, ‘Just enact your program,'” said Conway, counselor to the president. “‘Don’t worry about a Congress that isn’t supporting legislation to get big-ticket items done. And don’t worry about all the distractions, diversions and discouragement that others who are still trying to throw logs in your path are throwing your way. Focus on the agenda’ and he’s doing that,” Conway said.

The Gallup Poll out this weekend shows just 37 percent of Americans approve of the job Trump is doing, while 55 percent disapprove.

The lackluster numbers run counter to very strong economic gains since Trump became president — a booming stock market, strong job creation numbers and the unemployment rate falling to 4.3 percent, the lowest since March 2001.

“Nobody can deny these economic numbers. It’s been a great weekend for the president,” Conway said.

Trump sought to focus on the strong economic gains in a tweet Sunday from his vacation property in Bedminster, NJ.

Prior to leaving for a 17-day break from the White House, Trump spent the last week focusing on agenda items to appeal to his base: limiting legal immigration, going after leakers and blasting 2016 foe Hillary Clinton at a raucous rally in West Virginia.

His supporters responded with the familiar chant of “Lock her up!”

Conway also pushed back on a New York Times story that stoked speculation about a 2020 presidential run by Vice President Mike Pence.

“That is complete fabrication,” she said.

Trump is going nowhere: “He plans on being a two-term president.”

The Times reported Republicans are preparing for a 2020 run in case Trump can’t run for re-election.

Conway blamed Republican strategists who lost for peddling a negative narrative against Trump.

“I would tell my Republican brethren: ‘Get on board,’” Conway said. “’Help us. … Stop looking at 2020.’”