The Chait article and the Heilemann articles should be read by EVERYBODY this week.
Heilemann's article:
The Lost Party
The strangest primary season in memory reveals a GOP thats tearing itself apart.

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That Mitt Romney finds himself so imperiled by Rick SantorumRick Santorum!is just the latest in a series of jaw-dropping developments in what has been the most volatile, unpredictable, and just plain wackadoodle Republican-nomination contest ever. Part of the explanation lies in Romneys lameness as a candidate, in Santorums strength, and in the sudden efflorescence of social issues in what was supposed to be an all-economy-all-the-time affair. But even more important have been the seismic changes within the Republican Party. Compared to 2008, all the candidates are way to the right of John McCain, says longtime conservative activist Jeff Bell. The fact that Romney is running with basically the same views as then but is seen as too moderate tells you that the base has moved rightward and doesnt simply want a conservative candidateit wants a very conservative one.
The transfiguration of the GOP isnt only about ideology, however. It is also about demography and temperament, as the party has grown whiter, less well schooled, more blue-collar, and more hair-curlingly populist. The result has been a party divided along the lines of culture and class: Establishment versus grassroots, secular versus religious, upscale versus downscale, highfalutin versus hoi polloi. And with those divisions have arisen the competing electoral coalitionsshirts versus skins, regulars versus red-hotsrepresented by Romney and Santorum, which are now increasingly likely to duke it out all spring.
Few Republicans greet that prospect sanguinely, though some argue that it will do little to hamper the partys capacity to defeat Obama in the fall. Its reminiscent of the contest between Obama and Clinton, Senate Minority Leader Mitch McConnell recently opined. [That] didnt seem to have done [Democrats] any harm in the general election, and I dont think this contest is going to do us any harm, either.
Yet the Democratic tussle in 2008, which featured two undisputed heavyweights with few ideological discrepancies between them, may be an exception that proves the rule. Certainly Republican history suggests as much: Think of 1964 and the scrap between the forces aligned with Barry Goldwater and Nelson Rockefeller, or 1976, between backers of Gerald Ford and Ronald Reagan. On both occasions, the result was identical: a party disunited, a nominee debilitated, a general election down the crapper.
http://nymag.com/news/features/gop-primary-heilemann-2012-3/