You may be right and this has become personal for her. I can understand how she’d feel after supporting a bill that Parnell fought to stop (SB 21 or something). Once emotion gets in the mix it makes judgement iffy.
As I speculated to another FReeper, this must be causing some level of chaos in the race. Parnell has to count on GOP voters (presumably Palin supporters). Walker-Mallott has to count on the Dem opposition (and Palin haters). With Palin’s endorsement, the haters might switch to Parnell so as not to vote for HER candidate, but it ends up leaving Parnell & Palin supporters scratching their heads and wondering what to do.
I expect Parnell should win again, but you never know. I was hoping his race would be in the bag so we could focus more on taking out Begich, who should never have won in the first place. And next, in 2016, we need to finally take out Leftist Lisa the Horrible.