I swear, this is the best Republican circular firing squad evah!

According to Sarah Palin, it was the RNC

According to the RNC, it was the McCain campaign

And Fred Barnes throws consultant Nicole Wallace under the Straight Talk Express and says it was her.

Unsurprisingly, now it's suspected that Nicole Wallace is the "unnamed McCain campaign worker" feeding the media all the stories about the diva-like behavior of Sarah Palin. Rachel Maddow talks about the McCain campaign meltdown:

It is just too schadenfreude-licious