All of these threads are usually started by Republicans because they're embarrassed by the current state of their party and want it to change.
I honestly don't see significant changes in party platforms over the next 20 years though. If Romney loses, Republicans will blame the messenger rather than the message. If he wins, the far right message will have prevailed. Either way they have no reason to become more moderate or libertarian.
Yeah, but if Romney loses, then it has no choice but to become more Libertarian. Republicans can't afford to have anymore war mongers or social conservatives deluting the party's grass roots.
Something like this, the elections slowly realigns back to pre 1924 Calvin Coolidge election.