@Maj. Bill Martin : Thanks for your post.
My motivation is solely to prevent a Democratic victory, and save the GOP Senate. Unfortunately, we come from different initial premises. I do not think, realistically, that Trump can win re-election, and you do. Many of his policies I support, and I certainly want the tide of conservative judges to continue. But the man is fatally flawed - he cares only but to appeal to his own faction. And the cumulative weight of criticism - deserved or not - of his crude, impulsive approach to governance is leaving a mark. He won as a reaction to a worse choice. The same impulse will motivate the voters this time around too.
You are correct that my desired outcome is for someone with gravitas like Mitch to advise him to not run for reelection. But sometimes it takes a focusing of the mind to listen to wise counsel. Sanford, I think, can help focus Trump's mind, by running a positive campaign that nevertheless speaks hard truths about the stakes. To be successful, he must use Cruz's fundamental appeal - that each and every one of us in the GOP is bound by duty to party and country to vote in his or her GOP primary as our conscience dictates.