Greg Sargent summarizes it well in GOP on verge of huge, unprecedented political victory:
Anything can happen, but it appears the GOP is on the verge of pulling off a political victory that may be unprecedented in American history. Republicans may succeed in using the threat of a potential outcome that they themselves acknowledged would lead to national catastrophe as leverage to extract enormous concessions from Democrats, without giving up anything of any significance in return.
Earlier post: Thought for the Day: July 31, 2011.