In Alabama, Moore has repeatedly denied the accusations and rebuffed calls from prominent Republicans, including Senate Majority Leader Mitch McConnell, House Speaker Paul Ryan and two former Republican presidential candidates, Mitt Romney and Senator John McCain, to end his candidacy in the December 12 election.
Corfman said the encounter with Moore affected her relationships with men.
Mr Moore, who denies the allegation, is now lagging in opinion polls.
There's no evidence Moore had any contact with Kisor as a teenager.
Trump had pushed for Republicans to nominate Luther Strange, the appointed senator now holding the seat, but when Strange lost to Moore in a party primary in September, Trump voiced his support for Moore on Twitter. Even Trump's daughter Ivanka came out to say she believed Moore's female accusers and said "there's a special place in hell for people who prey on children" - comments that are being featured in Democratic opponent Doug Jones' campaign ads. The Republican National Committee has cut ties with the Moore campaign, and Sen. "Roy Moore should find something else to do".
But Moore has remained defiant and in the race despite public polling and some GOP internal surveys that show Jones in the lead.
Democratic strategist Doug Thornell said candidates opposing Republicans are wise to make use of Moore's behavior and refusal to step aside.
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She said she had been sitting with her mother on a bench awaiting a child custody hearing in her parents' divorce case.
On Monday, White House adviser Kellyanne Conway suggested that electing Mr Moore to help pass the United States president's tax reform agenda took precedence over the widespread disquiet about the allegations.
It's a departure from just two weeks ago, when the White House sought to distance itself from Moore and even suggested he might need to step down. The election is to fill the last three years of the Senate seat once held by Jeff Sessions, who resigned from it to join President Donald Trump's Cabinet as attorney general, the country's top law enforcement position.
Trump was asked on Tuesday to offer a message to women at a time when a litany of powerful men in media, entertainment, politics and business have been accused of sexual misconduct.
Trump said he believes Congress should release the names of lawmakers who have settled sexual harassment claims.
"I'm telling you that we want the votes in the Senate to get this tax bill through", White House aide Kellyanne Conway said Monday on "Fox & Friends". "It took years for me to regain a sense of confidence in myself, and I felt guilty".
This is a developing story and will be updated.