ABC News's Jake Tapper has chronicled the back-and-forth between the Obama and McCain campaign over whether or not the Obama camp attempted to push negotiations on a public financing pledge that Obama had introduced last year.

The McCain campaign originally said that the Obama campaign did not attempt to negotiate a deal with them prior to his announcement this morning that he would forgo public financing. The Obama campaign disputed that, saying the lead counsels of both campaigns met briefly, where it was made clear by McCain's camp that there would be no deal.

Now the McCain camp is disputing that statement, as Tapper quotes McCain campaign counsel Trevor Potter:

"This is not true!" Potter says in an email. "I met with Bob Bauer on a different subject (a joint panel we had yesterday in Rhode Island sponsored by the National Assoc. of Attys General) about 10 days ago. During that meeting, he asked what Sen. McCain's position was on public general election funding, and I said we were for it, and hoped Sen. Obama would participate as well. There was absolutely NO discussion of 'negotiations' about participating--the word was never mentioned."