[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/09/13/art.odonnell.delaware.jpg caption="Sarah Palin has taped a last-minute robo-call for Delaware Republican Senate candidate Christine O'Donnell."]
Lewes, Delaware (CNN) - Sarah Palin is taking on the GOP establishment again.
"I can relate to the vicious personal attacks on Christine and can tell you it's sad to see the establishment's desperation in this," the 2008 GOP vice presidential nominee says in a new robocall and radio ad taped for Delaware Republican Senate candidate Christine O'Donnell who she endorsed last week.
O'Donnell is the insurgent tea-party backed candidate who is now giving the state's best known Republican, Representative Mike Castle, a run for his money in the primary. O'Donnell won the endorsement of the Tea Party Express this summer and both Palin and Senator Jim DeMint threw their support behind her campaign in the last few days.
The O'Donnell campaign has bought time to broadcast the Palin robocall on the radio. In it Palin says "a wave of positive change can really sweep across our land with the election of Constitutional conservatives like Christine who promise to use common sense and rein in federal government spending." She urges listeners to vote on Tuesday insisting, "We just can't afford more of the same in Washington and Christine will help usher in the real change that we need."
As money has poured in to O'Donnell's campaign and she's closed ground with Castle, she's come under heavy attack. She's been accused of personal financial problems and the state GOP filed a complaint with the Federal Election Commission alleging the O'Donnell campaign coordinated with a tea party PAC. The O'Donnell campaign denies that charge.
Sarah Palin has also recorded a robocall for the establishment-backed Republican Senate candidate Kelly Ayotte in New Hampshire, among others.