If DJT didn’t open his mouth for Strange this would be a 10-point lead NOW for Moore. He got snookered by the GOP-E on this one.
No, the President—properly—showed loyalty to an incumbent GOP Senator who had already showed loyalty to him, by voting in accordance with the President's agenda 100% of the time.
Thus, this is a win-win scenario for President Trump. If the incumbent retains his seat, he's sure to remain loyal to the President—especially in light of the President's valuable endorsement. If not, the President will have an even more staunch and enthusiastic supporter in the Senate from Alabama, in the person of Judge Roy Moore...