There have been times during our history where groups have been even more divergent than we are now - the Civil war, the Revolution - we've had several more minor periods as well. Having 2 (or more) very contrasting philosophies of where our country needs to go is nothing new. In order to truly fix our disfunctional government, I believe we need major overhaul of the Constitution. Although the current constitution has got the right foundation, there's no way our founding fathers could have envisioned things as they are today - the level of greed throughout our government is shameful, and greed is what undermines our entire system.
Of course, there's virtually no support for such a drastic change within our current government. As such, I think we're left with no choice but to flex our voting muscle until the government listens to it's people. The strongest message we can send - vote out any incumbent. The one exception I could see with this approach would be to re-elect Obama...only because voting for Romney would be just as productive as voting for the ham sandwich.
Until both parties are willing to come back to the middle, our government will be disfunctional. And during these economically trying times, we really can't afford to pay a government to accomplish nothing. And the only stick we hold is our vote. So I say turn them all over - impose our own term limits - until we can finally trust our government again.
I realize there may be some good people being removed, but good people are sacrificed in every revolution. In the long run, when Congress realizes that we need real change in the way we do business, and that we won't settle for anything less than true change, we have to show them all that we mean business.