Trump is nothing if not a realist.
Moore lost once.
He will more than likely lose again.
A Democrat now sits in that seat because of him.
Really no upside to supporting this Quixotic campaign.
A Democrat now sits in that seat because of a massive media smear campaign against Moore, and deliberate Republican backstabbing of their own candidate.
Moore himself had nothing to do with losing. It was all forces larger then him.
Had those lying bitches not been dragged up by that lying reporter Stephanie McCrummen from the Washington Post, and had the national media not carried every smear against Moore, he would have won by a heavy margin.