Have you seen the debate on health care? It'd definitely a two sided argument. Republicans who are all "no" and (most) democrats who are all "yes." Bipartisanship is out due to republicans making militants of their base by demonizing anything pushed by democrats and progressives. If they even think about voting with democrats their base will simply find someone else. However, this isn't simply a republican problem, now it's become a problem for all of us.
According to
this poll 20% of Americans prefer Socialism to Capitalism, 53% of Americans outright prefer capitalism of Socialism, and 27% of Americans are unsure. This is after taking into consideration that Americans under 30, of which 37% prefer capitalism, 33% socialism, and 30% are undecided, you begin to see a trend: there is a paradigm shift about to happen in American within the next 25 years. I have no doubt that there will be a socialist movement in America to replace the free-market way of thinking in our lifetimes.