NEW YORK/WASHINGTON, Oct 7 (Reuters) - Republican presidential candidate Donald Trump plunged into a deep crisis on Friday after a bombshell 2005 recording came to light in which he boasted in vulgar terms about trying to have sex with an unidentified married woman and groping women, saying "when A stream of Republican leaders denounced the remarks, first published by the Washington Post, which threaten Trump's already shaky standing with women voters just a month ahead of the Nov. 8 presidential election. House of Representatives Speaker Paul Ryan, the top Republican elected official, said he was "sickened" by the comments and said Trump would no longer attend a campaign event in Wisconsin with him on Saturday. "I hope Mr. Trump treats this situation with the seriousness it deserves and works to demonstrate to the country that he has greater respect for women than this clip suggests," Ryan said in a statement. Reince Preibus, chairman of the Republican National Committee, said: "No woman should ever be described in these terms or talked about in this manner. Ever." Senate Majority Leader Mitch McConnell said the comments were "repugnant" and that Trump "needs to apologize directly to women and girls everywhere." U.S. Representative Jason Chaffetz of Utah, who has been one of Clinton's fiercest critics, said he had retracted his endorsement of Trump, telling CNN he would not be able to look his 15-year-old daughter in the eye if he voted for Trump. Utah's Republican Governor Gary Herbert said on Twitter he would also no longer vote for Trump. "Tonight, millions of Republicans are facing a moment of truth," Herbert said. Republican lawmaker Mike Coffman from Colorado told CBS that Trump should "step aside" and said "his defeat at this point seems almost certain." Trump was expected to release a video statement late on Friday. Earlier, in a brief written statement, Trump shrugged off the leaked tape as "locker room banter, a private conversation that took place many years ago." In the recorded conversation, Trump was wearing a microphone and chatting on a bus with Billy Bush, then host of NBC's "Access Hollywood" ahead of a segment they were about to tape. "I did try and fuck her. She was married," Trump said. "I moved on her like a bitch, but I couldn't get there." Trump talked about his attraction to beautiful women. "I just start kissing them," he said. "And when you're a star they let you do it," he said. "Grab them by the pussy. You can do anything." Trump, who has brought up former President Bill Clinton's infidelities as a criticism of Hillary Clinton, calling her a "total enabler," responded to the audio. "Bill Clinton has said far worse to me on the golf course - not even close. I apologize if anyone was offended," Trump said. "Access Hollywood" confirmed the video in its own report, saying it discovered the comments in its library. Billy Bush said in a statement to Variety he was "embarrassed and ashamed" of his comments. Other prominent Republicans also condemned the comments but stopped short of withdrawing their support for their candidate, including Arizona Senator John McCain and Texas Senator Ted Cruz.