No, it was the allegations that he molested a 14 year old and attempted to rape an 18 year old.
Those are the two accusations that caused the problem, and both were made by kook women (one caught lying) dragged up by that Democrat activist. (I forget her name, but there are pictures of her with Hillary and Al Gore at fundraisers.)
Without those two serious accusations, the accusation that he dated 18 and 19 year old women while in his early 30s would not have amounted to anything.
The vicious, lying media bastards kept lumping the women who dated him as "accusers" with the two drug addled, promiscuous, suicidal kook bitches with wrecked lives, in an effort to make it appear that he was a serial rapist/molester.
I tried to point out at the time that all but those two crazies said he behaved like a "perfect gentleman", but most people either couldn't distinguish or refused to distinguish between a 30 year old man dating an 18-19 year old, and an accusation of rape and an accusation of molestation of a 14 year old.
Moore's campaign died on The Sean Hannity Show when Hannity asked yes or no if he courted teens while a 30-something grown man and Moore was unable to unequivocally deny this.
600,000+ Trump voters stayed home. The sad irony is that most of them thought Moore would still win without their votes.
I think what sunk him was his appearance on Hannity. When Moore was asked about the “accusations” he had the same “deer in the headlights” look that Ted Kennedy did back in 1976 when Dan Blather asked him why he wanted to be president!