Probably for the reasons Diogensis mentioned.
Why is simple of course. If anyone cares to look, many/most of the very same names now singing the praises of Walker, Rubio and even making excused for Jeb, the people who fought with tenacity for Rick Perry, hell for the entire RINO crew; attacked, and at minimum, devalued PEVERYTHING about Palin.
They then stood their piously telling us, after any remotely conservative person had been eliminated from that election and and the last election, (Bhoner/Mitch and those rinos) that we were purists that hatted our own country.
The very same people who refused to back Palin, now refuse to back Crus, yet lined up like good little liberals to trash conservatives and vote for Mitt, Mitch and Jonbon...or support their election if out of state.
Because they are liberals. Real ones. Their RINOS have since delivered unto the DNC, everything they wanted and stabbed conservatives in the back and the GOP is now a hard left party as their post election record shows.
Now here they are again with the same playbook and not one person will zot their liberal asses to oblivion.
Why?