Some Background On The Obama Decision

From an Obama aide:

"[During] the past couple of weeks, our campaign counsels met and it was immediately clear that McCain's campaign had no interest in the possibility of an agreement. When asked about the RNC's months of raising and spending for the general election, McCain's campaign could only offer its expectation that the Obama campaign would probably, sooner or later, catch up. And shortly thereafter, Senator McCain signaled to the 527s that they were free to run wild, without objection."