@Jeruba can represent me on this response. In fact, so can @Hawaii_Jake.
I’m always a little bothered by the responses in this forum of those who think that the Republican party and those who support it are somehow “off”, or “wrong” in any number of fundamental ways; that they are somehow monstrous. I can assure those people that most Republicans (aside from a few zealots whom they may feel to be somehow representative of the whole body) do not feel that way about Democrats or the Democratic party. I don’t see that kind of response from the avowed Republicans on the board; I hope I’m not just blind to it. (In fact, I would take it even further and suggest that we probably would do better to have more parties involved in our politics, even without a formal parliamentarian form of government.) For my part, I accept the existence – and fully respect their right to be as wrong as they usually are about most matters of government – of both major parties.
However, I will agree that the Republican party has been beset since before Reagan’s day with a perceived alignment with fundamentalist Christianity. (Not that I’m knocking fundamentalist Christianity in this response; I’ll do that plenty of other places but fundamentalist religion of all kinds is pretty much anathema to any nation that is as large and diverse as this one is. And too simplistic, too.) The Democratic party platform generally contains its own ideological blind spots, including the current treatment of “climate change” as unquestionable received wisdom from on high, and the exceedingly silly attempts to “tolerate” all kinds of absolutely intolerable behavior and policies that seek to normalize acceptance of all cultures, even those that explicitly seek to destroy ours.
The question of “ideological purity” applies to more than just evangelical Christians in the Republican party, though. What some call the “pragmatic” faction a lot of us who stand apart from both major parties see as just “Democrats-Lite”. In other words, “Doing the same thing, just a bit slower.” Mitt Romney had a point – though he walked away from it – when he made the claim during his campaign that some “47% of the population is beholden to the federal government”. A lot of us (non-Republicans) wished that he had pursued that line of attack.
Social Security recipients, for one thing, though in general they currently support the status quo because it feeds them, frequently recognize unhappily that they are wards of the state. That’s not a comfortable place to be. Years ago I used to suggest that those of us who were decades away from retirement should make a bargain to sacrifice all that we had at that time paid in to FICA with a promise that we would never make a claim against it, as long as we didn’t have to pay any more. Sadly, I’m moving towards retirement now myself, and I’m less inclined to make that bargain – but that’s what constitutes “support” for Social Security now. That’s why Social Security is “the most popular program” that the federal government administers. Hooray for that kind of popularity.
Likewise most other federal programs that could be named. The more that government attempts, the more it screws up, and the more it has to do to fix the last screwup.
Yes, there is a place for the federal government in upholding some basic safety net for the absolutely disadvantaged, disabled and hopeless among us. But some “ideological” Republicans (properly, I think, and if this was the extent of their ideology I might even join them) want to start to dismantle the overarching welfare state, while those considered by some here to be “pragmatic” just prefer to go-along-to-get-along. I think that’s wrong, too.
Getting back to the question: The Republican party isn’t going anywhere soon. There’s too much “there” there – including “too much government” with too much of its own inertia. This is not the United States of 1860 where a regionally fractious issue has arisen to split the nation as dramatically along party lines as slavery did then, and where a champion against the weaker region’s defining issue can further split the Whig party to become “the Republicans” in the first place.
I expect that we’ll keep electing both Democrats and Republicans to the White House (and then handing control of Congress to the other party on a slightly different cycle) because the nation is so closely divided on so many issues that radicals on either side can tempt the swing voters in the middle to one side or the other.
As @Hawaii_Jake suggests, the jockeying for position right now is not indicative of the entire race to be run from now until next November. Way too early to call for anyone yet, except those who have already dropped out.
So it all comes down to some middle-aged woman in Columbus, Ohio, and her small circle of friends to determine who will be our next president.