WASHINGTON — Colorado U.S. Sen. Cory Gardner on Saturday said he would not support Donald Trump for president, joining a growing chorus of Republicans who have abandoned the GOP presidential nominee following the release of a 2005 video that shows Trump making vulgar comments about women.

“I will not vote for Donald Trump,” said Gardner in a statement, reversing his decision in August to back the business mogul.

“If Donald Trump wishes to defeat Hillary Clinton, he should do the only thing that will allow us to do so — step aside, and allow Mike Pence to be the Republican party’s nominee. If he fails to do so, I will not vote for Hillary Clinton but will instead write-in my vote for Mike Pence,” he added.

Gardner is the second congressional Republican from Colorado to forsake Trump since Friday night. U.S. Rep. Mike Coffman of Aurora also has called on Trump to rescind his candidacy after a story by The Washington Post highlighted a video that was recorded during a Trump appearance on the television show “Access Hollywood.”

In that video, Trump offered lewd descriptions of how he kissed and groped women without their consent. “And when you’re a star they let you do it,” Trump said. “You can do anything.”

Following its release, Coffman — amid a tough re-election battle against Democrat Morgan Carroll — ended months of hedging over Trump and declared he would not vote for the Republican nominee.

“For the good of the country, and to give the Republicans a chance of defeating Hillary Clinton, Mr. Trump should step aside,” Coffman said in a statement emailed by his campaign to The Denver Post. “His defeat at this point seems almost certain and four years of Hillary Clinton is not what is best for this country.”

In a follow-up text message Saturday, Coffman spokeswoman Cinamon Watson confirmed that Coffman’s statement meant he would not vote for Trump after months of saying he was undecided.

Trump also lost the vote of Republican U.S. Senate candidate Darryl Glenn. After Glenn said Saturday morning that he would take time to pray about the decision, he said that evening that he couldn’t do it.

“As a father, as a Christian, and as a Republican, I believe that we simply cannot tolerate a nominee who speaks this way about women,” Glenn said in a statement.

How this affects the vote in Colorado remains to be seen, though Trump’s loss of support from Coffman, Gardner and Glenn isn’t likely to help a nominee who already faced skepticism from his own party. Colorado Republicans backed U.S. Sen. Ted Cruz of Texas in the primary and the state’s delegation this summer led a failed revolt against Trump at the Republican National Convention in Cleveland.

That skepticism may have contributed to a string of Colorado polls this summer that showed Clinton with a large lead. Her advantage appeared to wane in Colorado in mid-September, but two recent polls from Monmouth University and Keating Research showed Clinton back on top.

In the Monmouth University poll, 95 percent of Democrats supported Clinton and 90 percent of Republicans backed Trump.

Reaction was swift on social media to the abandonment of Trump by Coffman, Gardner and Glenn. The Facebook pages of all three politicians were embroiled in debate by commenters voicing either support or disparagement.

“I have voted for you in every election but this year I will abstain,” said one critic on Coffman’s Facebook page. “You have called for Trump to drop out of the race but have issued no such calls to Clinton, a criminal. You are looking out only for yourself and lack moral courage.”

Said another commenter: “Thank you, Mr. Coffman. Putting decency and conscience above party. You are a man of honor.”

Nationally, fallout from the Washington Post’s bombshell about a 2005 video recording of the controversial politician’s lewd conversation about women continued to roil the political scene.

Several prominent Republicans, from U.S. Sens. Mike Crapo of Idaho to Kelly Ayotte of New Hampshire, said they would not vote for the GOP nominee. Even Pence, Trump’s running mate, issued a statement saying he was offended.

The Republican candidate attempted to apologize late Friday in a video posted on his Facebook page.

U.S. Rep. Doug Lamborn, R-Colorado Springs, said he was glad Trump issued an apology and added that he still planned to vote for him. Trump “must now take every opportunity he has to show our nation that this sort of behavior is in the past and that he is dedicated to treating people with respect and dignity,” Lamborn said in a statement.

Democrats tried to make hay over Trump’s comments, turning the video into a political weapon against their GOP rivals. Both Sen. Michael Bennet and Carroll described their opponents’ withdrawal of support as too little, too late.

“Attacks on a Gold Star family, mocking a disabled reporter, threatening physical violence on his opponent, and calling Mexicans rapists and murderers wasn’t enough to lose Coffman’s support. But now, with a month to go before Election Day, Mike Coffman is looking out for one person – himself,” Carroll said in a statement.