Nothing shows Trump's departure from the rest of his adopted party like the near total silence from former Republican presidential nominees.
Rubio's newest supporters: Former GOP nominee Bob Dole, Arkansas Gov. Asa Hutchinson, and U.S. Sen. Orrin Hatch of Utah.
Despite his age, Dole just might be more in touch with his party's broader base, with American voters overall, than the candidates 30 or 40 years younger.
Reagan would have no chance at becoming party leaders in the Tea Party era.