That's what Jason Kuznicki believes O'Donnell's win means. Drum isn't so sure:

If O'Donnell loses in November and turns out to literally be the difference between 50 seats in the Senate and 51, then plenty of Republicans will be gnashing their teeth. But if the net result is that they get 46 seats instead of 47, and those 46 are considerably more conservative than they would have been without tea party fervor, I'll bet most of them will consider it a pretty good bargain.

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