Going after Trump on his past dem-lib-prog stances on issues is a perfectly legitimate tactic - for someone OTHER than Jeb Bush.
There is a tale from Greek mythology of a giant that Hercules encountered, Antaeus. Antaeus was a son of the earth goddess Gaia, and so long as he was in contact with the earth, his strength was endless and sufficient to match any opponent. And each time an attempt was made to seize Antaeus and lift him from the surface of the earth, to dash him back to the ground, his strength was multiplied tenfold, making Antaeus a vastly more formidable opponent.
Hercules was advised (by Athene) to not merely to raise Antaeus into the air, away from contact with the earth, but specifically NOT to let him touch the surface. Once not in contact with soil, Antaeus’ superior strength swiftly drained away, and Hercules was able to slay the giant by crushing his ribs, and once dead, laying the corpse upon a bier above the ground.
The Donald has hoisted the major RINO opponents away from the contact with earth that supplied all their strength, and is holding them in the air as their powers ebb away.