The Tea Party fringe will never appeal to the broad American public. The Sarah Palins, Michelle Bachmanns, etc. will never win a general election.
The R's have no road to turn to. The Southern Strategy will no longer work. They are forced to make a deal with the devil, Teabaggers, and they are already beginning to regret it.
Reagan couldn't win because he was too much a right-wing radical. George W. Bush couldn't win, he was only known for one thing; being the son of a President, a spoiled brat.
Don't underestimate the ability for radicals to win elections. Even if most can't, along comes one who can appeal to voters enough and play the game who can.
Look at our statehouse around the country who elected Republicans who regret it now.
For one thing, just remember, forget the candidate - a lot of money demonizes the Dem.
After 12 years of Reagan/Bush and 8 more of Bush 2, the country gave Congress to R in a big way, a historic win.
They have setbacks and backlashes, but corporate interests aren't going away.
Actually they have a historic advantage with the Supreme Court ruling, allowing unlimited corporate donations that turned Republican spending from less than Dems to double.
You could have said a bit ago there's no way the Tea Party could win the seats it has in Congress, too. Every Republican presidential candidate IMO is no better than a 'tea partier'.
While they haven't won the election in 2012, they have a winning strategy that gives them a chance if the economy is destroyed over the debt ceiling.