Re: All McCain...

Answer: It's right there in the story. We may never know, at least in time for it to make any difference:

Complicating the dispute is the FEC's current lack of a quorum. The six-member commission has four vacancies and Senate Democrats and Republicans are at loggerheads over how to fill them.

In his letter, Mason told McCain he would need the votes of four commissioners to accept his withdrawal from the system.
"The commission will consider your request at such a time as it has a quorum," Mason wrote.
Without action by the Senate, McCain could be waiting indefinitely.

And have I mentioned we should have instantaneous, real-time disclosure?