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After a raft of new TV ads that pointedly declined to pick a fight with either of her presidential opponents, Hillary Rodham Clinton is up in Pennsylvania today with a new radio spot (subscription) harshly criticizing Barack Obama for his rhetoric on energy prices.

"In his TV ads, Barack Obama sounds like he'll take on the oil companies," an announcer says in the ad, which uses excerpts from an Obama spot on energy policy currently running in the state. Citing a report from the Annenberg-funded Factcheck.org that called Obama's ad "a little too slick," Clinton's radio spot implies that Obama's rhetoric has little substance to back it up -- echoing a familiar line from the New York senator's campaign.

The spot also attacks Obama for supporting "the Bush-Cheney energy bill" while "Hillary Clinton voted against that bill." It's the spot's closer, however, that truly drives home the campaign's overall message in unusually stark terms: "It's time for a president who takes on the oil companies in real life, not just on TV."

In a conference call with reporters this afternoon, Clinton spokesman Howard Wolfson fumed over Obama's heavy paid-media investment in the state, accusing him of "doing everything he can on the air to buy this election in Pennsylvania" with an "unprecedented ad buy." He also blamed Obama's spot -- which makes no mention of Clinton but which Wolfson repeatedly called "misleading" and "not accurate" -- for forcing Clinton to release her ad.

"Senator Obama was urged to take the spot down by this campaign.... He has chosen not to do that," Wolfson said. "So it becomes incumbent upon us to set the record straight for voters in Pennsylvania."