Damned if you do, but maybe not so damned if you don't. That's why I could never be a politician, I couldn't put up with the randomness of so many outcomes. It feels like a game with badly constructed rules.
As badly as Democrats have done recently at constructing narratives (a very underrated skill for leaders, especially in bad times), the Republicans seemed to fumble an easy path to a sweeping midterm takeover in November. David Frum thinks so, and Nate Silver, while not going that far, certainly believes that electing O'Donnell in Delaware was a poor outcome for Republican chances to take over the Senate.