FF.
I think the only reason Coakley is so hated among Democrats is because her loss was the canary in the coal mine for the 2010 GOP wave. Instead of facing the reality that we were in for a huge shellacking, we instead chose to pin it all on Coakley to make ourselves feel better (I should know, I did it as well). It was a similar dynamic with Alex Sink. Instead of accepting her loss was the harbinger of a decent GOP year (even if not a wave), Dems chose to blame her for everything as well rather than taking into account the national mood and the implications for the upcoming midterm.
Don't get me wrong, Coakley ran a horrible campaign in 2010. And while it's been much better this year, she's still not exactly setting the world on fire. But I strongly believe this is why she's hated with such vicious intensity among some Democrats.