The Obama campaign got the day started with a Wall Street Journal op-ed by the campaign's top economic advisers, and continued the discussion of taxes in a conference call and in the unveiling of a new page on the campaign website that details Obama's tax plan.

"Today we wrote this op-ed in order to set the record straight about some of the misleading claims based on inaccurate and misleading misrepresentations of Obama's economic plan," economic policy director Jason Furman said. Furman argued that Obama's tax plan ensures cuts for middle class families, something he said the McCain plan can't do.

The McCain camp kept the conversation going in a rebuttal conference call, in which McCain economic adviser Carly Fiorina claimed Obama's record during his "short time in the U.S. Senate" contrasted with his "shifting rhetoric" on taxes.

"What we have here is once again shifting rhetoric over time driven by his ambition to become President of the United States," Fiorina said. "It's useful to remember that even with the latest shift in his rhetoric, the reality is that what Barack Obama is proposing is not to raise taxes on everyone, to increase government spending. And he does not seem to have a particular emphasis on job creation." Fiorina contrasted Obama's plan with McCain's, which she said "has been consistent over time, and which lowers taxes for everyone."

On the Obama call, Furman was asked about the McCain camp's continued argument that Obama would raise taxes on those making as low as $42,000. "The McCain campaign's claims are completely false and have been rebutted by virtually every news organization and independent factcheck organization that has looked at them," Furman said. "Barack Obama's plan could not be clearer on these grounds, and the McCain campaign is just simply flat-out false."