WASHINGTON (AP) — The nation’s most powerful Republican told his party Monday he’s now focusing on making sure Hillary Clinton doesn’t get a blank check as president with a Democratic Congress, suggesting he doesn’t believe Donald Trump can win the election.

House Speaker Paul Ryan’s office quickly said he was not conceding the election’s outcome. But pro- Trump GOP House members got that impression, pushing back and saying Trump can still prevail and should not be abandoned. One outspoken conservative called Ryan and other Republican leaders “cowards.”

A person who was on Ryan’s conference call with GOP lawmakers said the speaker declared that he will “spend his entire energy making sure that Hillary Clinton does not get a blank check with a Democratcontrolled Congress.” The person wasn’t authorized to be quoted by name and demanded anonymity.

Ryan said he wouldn’t defend Trump or appear with the Republican presidential candidate for the rest of the campaign, according to lawmakers and Republican congressional staff, who also spoke on condition of anonymity.

Trump fired back on Twitter: “Paul Ryan should spend more time on balancing the budget, jobs and illegal immigration and not waste his time on fighting Republican nominee.”

The remarkable developments came as Trump battled to rescue his campaign after the release last week of a 2005 video in which he is heard bragging about how his fame allowed him to “do anything” to women. Several leading Republicans have withdrawn their support or even called for him to drop out of the race.

Several people on the call said Ryan explicitly told House members, “You all need to do what’s best for you in your district.”

Ryan said he was “willing to endure political pressure to help protect our majority,” a person on the call said.

Ryan’s message appeared to signal his disbelief in Trump’s ability to turn the campaign around with four weeks until Election Day, though he didn’t actually revoke his endorsement. He said his decision was driven by what he thought was best for the Republicanled Congress, not himself, according to people on the call.

In the eyes of many Republican leaders, the recently released tape of a 2005 conversation in which Trump made vulgar, predatory comments about women not only jeopardized his own uphill candidacy but that of Republicans fighting to hold their majority in the Senate. Their commanding majority in the House could now be in peril, too.

Some conservatives expressed alarm with Ryan’s tone, according to those on the call.

California Rep. Dana Rohrabacher called Republican leaders “cowards,” one person on the call said .

Questioned at Sunday’s debate about his vulgar remarks, Trump turned his fire on the Democrats.

He accused Bill Clinton of having been “abusive to women,” and said Hillary Clinton went after those women “viciously.” He declared the Democratic nominee had “tremendous hate in her heart” and should be in jail.

“Anything to avoid talking about your campaign and the way it’s exploding,” Clinton countered.

Trump got backing Monday from his running mate, Indiana Gov. Mike Pence, who gave a series of television interviews, urging Republicans to stand behind Trump.

“This is a choice between two futures,” Pence declared, saying he never considered leaving Trump’s ticket.

“I’m honored to be standing with him,” Pence said.