Of course, he said he would support the GOP nom. (Something Mister Trump declined, IIRC)
Why should Trump support a GOP nominee who is a POS? I won't ever again hold my nose to vote for a GOP candidate I know isn't good for America, and is going to stab me in the back down the road. I'd rather sit home on Election Day, rather than continue the bad habit of supplying Rinos to an already severely infected Congress.