Speaker Paul Ryan told House Republicans on Monday that he won’t campaign with — or defend — Donald Trump, and urged his members to “do what’s best for you” in the month left before Election Day.

In a stinging rebuke to his party’s presidential nominee, the nation’s top elected Republican told fellow GOP members in a conference call that protecting the party’s House majority must be their priority going forward.

“The speaker is going to spend the next month focused entirely on protecting our congressional majorities,” Ryan’s spokeswoman, AshLee Strong, said in a statement.

During the call, Ryan said he “won’t defend Trump” or otherwise campaign for him between now and Election Day — telling Republicans in Congress to “do what’s best for you,” according to CNN.

Ryan did not say Monday whether he was reversing his endorsement of Trump.

Another spokesman for the speaker, Zack Roday, said there is “no update in his position at this time.”

A person who listened to the call told CNN the reaction wasn’t entirely positive — and that Ryan’s comments angered some GOP members who believed he was effectively conceding the presidential contest to Hillary Clinton.

Trump has been under heavy fire since Friday, when video of a 2005 chat showed him making crass comments about women.

Ryan has reason to fear potential Republican losses in Congress, according to a new poll out Monday.

Voters in the NBC/Wall Street Journal poll said by a margin of 49 percent to 42 perfect that they want to see Democrats — and not Republicans — in charge of Capitol Hill.

Trump’s campaign pointed out that Ryan made a pledge when he endorsed Trump in June.

“I certainly hope Speaker Ryan keeps his word and endorsement of Donald Trump,” Trump campaign manager Kellyanne Conway said on “CBS This Morning.”

Additional reporting by David K. Li

Ryan hinted at how disturbed he was by Trump’s recent comments at the Party Unity Rally in Wisconsin on Saturday: