“Character matters. @realDonaldTrump is obviously not going to win. But he can still make an honorable move: Step aside & let Mike Pence try,” he tweeted.

Character matters.@realDonaldTrump is obviously not going to win.

But he can still make an honorable move:

Step aside & let Mike Pence try. — Ben Sasse (@BenSasse) October 8, 2016

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"I respectfully ask you, with all due respect, to step aside. Step down, allow someone else to carry the banner of these principles... rather than weighing down the American people," Lee said.

Sasse and Lee avoided ever endorsing Trump for president. Kirk endorsed him when he became the nominee, but unendorsed in June over Trump’s attacks on a federal judge’s Mexican heritage.

Trump's lewd comments spiraled into a scandal on Friday afternoon after The Washington Post published video caught on a hot microphone before an appearance on "Access Hollywood."

The GOP nominee talked about unsuccessfully trying to bed a married woman and said that as a celebrity, women let him "do anything."

"You know I'm automatically attracted to beautiful — I just start kissing them. It's like a magnet. Just kiss. I don't even wait. And when you're a star they let you do it. You can do anything," he said in the audio.

"Grab them by the p----."