Maybe. And if they pan out, no one should be surprised.
The Republican Party appears to have found a message or two it can stay on and that resonate with the American electorate. Whether this political message will remain strong enough to help the party win back some of its lost seats in Congress remains to be seen, but you must keep in mind the cyclical nature of politics.
Right now, the Democrats are riding high, and they are using that political advantage to push through their agenda (which includes the environment). For the most part the media have been kind to the Democrats (you can call that media bias if you want), but more importantly the voters are still endorsing those plans. However, there are legitimate concerns out there (i.e. the costs associated with health care reform), and the Democrats would be wise to remember that leadership is not simply doing what you want.
Regardless of what the Democrats do now, the political pendulum will at some point in the future swing again. And it will eventually swing back again.
So, yes, the Republican Party will at some point find itself out of the political wilderness. I've made no secret on this blog that I believe a two-party system is not sufficient for the complex country in which we live. But right now that's all we realistically have. With the GOP in a morass, we therefore really only have one.
That's not good, regardless of where you fall on the political spectrum.