John McCain's campaign wasn't in a conciliatory mood after Hillary Clinton's latest ad, which goes after McCain on the economy, was released Wednesday.

For the ad, the Clinton camp took its now familiar 3 a.m. phone call format and deployed it against McCain instead of Barack Obama. This prompted McCain senior advisor Steve Schmidt to quip to Fox News, "With ads like that, it's more likely the call at 3 a.m. is 'Senator, you just lost another Superdelegate.'" And a spokesman for McCain said, "John McCain is ready to lead with a pro-growth economic plan to lower taxes, cut government spending, empower America's entrepreneurs and get our economy back on track. Americans can't afford the Democrats' liberal agenda to raise taxes, nationalize health care, cut off trade and crush the economy under big government."

Thursday morning, the McCain camp released a 3 a.m. ad of its own. The McCain ad, which is Web only for the moment but may go to television later, follows a standard Republican theme. Discussing the economy, a narrator says, "Hillary Clinton and Barack Obama just said they'd solve the problem by raising your taxes. More money out of your pocket. John McCain has a better plan: Grow jobs, grow our economy, not grow Washington."