Democrat Tim Kaine takes a shot at Republican George Allen's economic record in an ad released Wednesday, a day before Virginia's two U.S. Senate candidates go toe-to-toe in their final debate.

The 30-second spot is one of Kaine's most aggressive attacks of Allen to date. Dubbed "Risk," the ad insists Allen's tenure in the Senate under President George W. Bush was the catalyst for the nation's rising deficit and the economic collapse, and that returning Allen to the Senate would mean more of the same.

"He's once again pledging to maintain costly tax breaks for the wealthiest Americans and big oil companies while slashing education, defense, Medicare and other key priorities, making our businesses, middle class, and national economy weaker, not stronger," Kaine spokeswoman Brandi Hoffine said of the ad.

Allen's campaign called the ad "desperate."

"Tim Kaine must think that if he skews enough data, somehow Virginians won't notice that he has championed the run up of over $5 trillion to the national debt, tried to raise taxes on those making as little as $17,000 and lost 100,000 jobs as governor," Allen spokeswoman Emily Davis said.

Politico reported Wednesday that Allen and the National Republican Senatorial Committee recently cancelled two weeks of radio ads set to air around the D.C. area because the committee is shifting its funding from radio to TV. Kaine and Allen are spending a combined $14 million in advertising for the final weeks of the campaign.