New accuser claims Roy Moore sexually assaulted her in 1970s

Republican Senate candidate Roy Moore of Alabama says the latest allegations against him are a "witch hunt."
8:18 | 11/14/17

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Transcript for New accuser claims Roy Moore sexually assaulted her in 1970s
Mr. Moore reached over and began groping me and putting his hand on my breasts. I tried to open my car door to leave but he reached over and locked it so I could not get out. Reporter: Beverly young Nelson, detailing a sexual assault from Roy Moore nearly 40 years ago when she was only 16 years old. I tried fighting him off while yelling at him to stop. But instead of stopping, he began squeezing my neck, attempting to force my head on to chris crotch. Reporter: She is the fifth to accuse Moore of sexual assault. The women were all in their teens. Moore has denied the allegations and defiantly defended himself again tonight with his wife by his side. I never did what she said I did. I don't even know the woman. I don't know anything about her. I don't even know where the restaurant is or was. These things are false, and it's ugly, it's the ugliest politics I've ever been in in my life. Tonight Moore is fighting for his political life, not a single Republican senator has publicly said they remain behind him and senator majority leader Mitch Mcconnell went a step further today. I think he should step aside. Reporter: Do you believe the allegations to be true? I believe the women, yes. On capitol hill, other Republican senators echoed those sentiments. It was appropriate for me to withdraw my endorsement. For the good of your state, yourself, step aside. There is a strong possibilities the Republicans lose a senate seat in the reddest state in the nation. Even for a Republican in the trump era, Moore has stood out, F toting a gun at at campaign rally, riding horseback to the polls. He's never been afraid to buck the system. I have acknowledged god is the moral foundation of our law. Moore made headline when is he installed a giant monument of the ten commandments in the rotunda of the Alabama state judicial building. We allowed it to be taken from us. He was removed from the bench but later reelected only to be removed again when he defied the federal courts on same-sex marriage. It is immoral, defined by the law as detestable. President trump supported Moore's primary opponent but eventually backed Moore, though said he would have to step aside if the allegations are true. I would probably have taken what he did to me to my grave had it not been for the courage of four other women that were willing to speak out. Beverly young Nelson, who says she was a trump supporter was the first to come forward with the attorney Gloria Allred by her side. She said she was working as a waitress at a local restaurant where she said Moore was a regular and often flirtation. He would speak to me and sometimes pull the ends of my long hair as I walked by him. She said Moore, a 30-year-old deputy district attorney wrote in her year book, "To a sweeter girl, I could not say more merry Christmas, love Roy Moore, old Hickory house and he signed it Roy Moore, D.A. About a week or two later, she says Moore offered to drive her home from work and then crossed the line. He was also trying to pull my shirt off. I thought that he was going to rape me and I was struggling. At some point he gave up and he said "You're just a child," and he said, "I am the district attorney, no one will ever believe you." Young girls can feel trapped. They can feel nobody is going to believe them so then teens feel that they can't say anything and they simply need to endure the sexual assault as it's happening and for many years after when they're feeling ashamed and compromised. Nelson's account the latest in a series of bombshell allegations against Moore which began with a report in the "Washington post" last Thursday. The post was in Alabama reporting a story related to supporters of Roy Moore when we heard these rumors that he had pursued teen-age girls decades ago. Three of the women who ranged in age from 16 to 18 at the time allege Moore asked them on dates. A fourth, Leigh Corfman, said she was molested by him when she was 14 years old. There were two times he took her to his house and on one of those times undressed her and undressed himself, touched her over her bra and underwear and had her touch him over his underwear. These attacks involve a minor, and they are completely false and untrue. Moore not only denied the allegations but painted them as a smear campaign, taking aim at his opponents. We do not intend to let the Democrats or the established Republicans or anybody else behind the story top this campaign. He laid the blame at what has become a familiar target, the media, posting this video on his Facebook page. Washington covered another attack on my reputation in a desperate attempt to stop my political campaign. Even went on the offensive again his accusers. Isn't it change th-- strange that after 40 years of constant investigation, people have waited till four weeks prior to the general election to bring a their complaints. It's not a coincidence. Many women and girls will wait a lifetime or many years to report sexual assault. It is not uncommon to wait and forget about reporting it because you feel like you're the only one. In a radio interview with fox News host Sean hannity last Friday, Moore said he knew of two of the accusers who spoke to "The Washington post" and that he didn't remember if he had pursued them. Would it be unusual for you as a 32-year-old guy to have dated a woman as young as 17 or girls 16. Not generally, no. And if I did, you know, I'm not going to dispute anything but I don't remember anything like that. Despite the political blowback, some are standing by him. The media is the judge, jury and executioner. In judge Moore's case, I'm going to support him. But if these allegations are true, obviously he should step aside. If we cannot prove this is just based off of someone's words from over 40 years ago or 38, 40 years ago, then I think we should apply what we're expecting to happen to all American citizens is that we are innocent until proven guilty. Tonight in Alabama while no major Republicans have withdrawn support for Moore, several appear to be hesitating, including the governor. For now, though, with the special election just a month away, Moore shows no signs of dropping out of this race. He is adamantly denying, he has his wife on his side on that. As long as that is the case, he may not be swayed by anyone's testimony.

This transcript has been automatically generated and may not be 100% accurate.

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