Well, considering that the Repub Party has, over the recent past, conducted purges, witch hunts and some wickedly nasty call-outs among its own, I'd say this bout of "Holier than Thou-ness" in the party has got to run itself out sooner or later, simply as a matter of survival.
I do think the Party is willing to cut off an arm and an unruly cancerous leg of its own in its bid to survive its present dissociative disorder condition, but that would take having to lose a string of elections and perilously alienating itself from anything near what we generally consider "mainstream America". However, it does seem to me that that's where the Repub Party is headed from an outsider looking in perspective.
I had to ask myself this question: "Would the Tea Party, if it ever decided to secede from it's parent Repub Party, be able to win elections all on its own?" In its present form, I really don't think so. They are a known minority within the Repub ranks, yet they hold sway over it like they owned it outright. And to me, it has more to do with them forever challenging the majority over whether the majority are "conservative enough", or loyal enough to do what it takes to "get America back on the right track", whatever that means.
Therein lies the conundrum the Tea Party has afflicted the Repub Party with, and of which this thread is all about: What Repub presidential hopeful would ever dare point themselves out as a RINO in order to win elections and what "Truly Dyed in Red Republican" would ever say to another of its kind that they need to become more like the "enemies of the State" to take America back?
It seems to me the Tea Party has had to continuously set the benchmark further and further right to keep this challenge going in order to keep its hold over the Party proper. And, like a branch extending itself too far out from the trunk, it will break off sooner or later.
I'm just wondering what kind shit storm inside the Repub Party is it going to take to have that branch either break off or have itself get cut off and grafted somewhere else.