Palin had been a contributor the cable news network since January 2010. That means she stayed with Fox longer than she did her elected job as Governor for the state of Alaska.
The Fox spokesperson did not say whose decision the departure was, but the New York Times said that Palin's contract had expired, and was not picked up, despite negotiations that continued as recently as last week.
“We have thoroughly enjoyed our association with Governor Palin," Bill Shine, Fox News' executive vice president, programming, said. "We wish her the best in her future endeavors."
Interetingly, Palin has remained silent on the split on her Facebook page and Twitter account, which she regularly uses to to share her news and opinions.
Bye-bye Ms. Palin, seems like we hardly knew you...