tweeted on behalf of O'Donnell a few days before the primary followed by an endorsement on Sean Hannity's radio program.

"If she wants to demonstrate political power, go to Delaware and take the candidate whom she is backing and get her along the finish line campaigning with her in Delaware," said Rove.

"Sarah Palin has enormous magnatism and a big following. Let her employ it in the field on the front lines about a candidate she cares so much about," he concluded.

There has been tension between O'Donnell and Rove following her nomination as Republican candidate for senator from Delaware. Rove told Fox News' Sean Hannity that the candidate has said "nutty things."

"This is not a race we're going to be able to win," he said the night she won the primary.

O'Donnell fired back at Rove the next morning on ABC. "Everything that he's saying is unfactual," she said. "And it's a shame, because he's the same so-called political guru that predicted I wasn't going to win. ... He's eating some humble pie, and he's just trying to restore his reputation."