Byron York has an exit interview with Brad Smith of the FEC. I found this bit amazing (if true, though I've no reason to disbelieve it):

“McCain has always refused to meet with me,” Smith says. “I tried to meet him once at a public hearing. He was at the table, and I went up and I said, ‘Senator,’ and I held out my hand. And he instinctively took my hand, and then he looked up and realized who it was, and he yanked his hand away and said, ‘I’m not going to shake your hand. You’re a bully and a coward, and you have no regard for the Constitution. I don’t have to talk to you. I’m not going to talk to you.’ It was right in front of a large number of people, so I don’t think he wants to talk to me.”

“He said you were a bully and a coward?”

“Uh-huh. And corrupt, too. He always calls me corrupt. And my wife says, ‘If you’re corrupt, you’re the worst corrupt person I’ve ever seen. Where are the fur coats? The watches? The cars? The fancy trips?’”

This, of course, is the same John McCain was on the take as one of the Keating Five. And the irony of John McCain accusing someone else of having no regard for the constitution bends the needle on the meter. And I can't imagine on what basis he would call him a "bully and a coward."

Smith isn’t finished on McCain. After watching the senator for years, Smith believes McCain doesn’t truly understand his own signature issue. “He is woefully ill informed on campaign-finance issues,” Smith says. “I have seen him repeatedly misstate what the law is, misstate what court decisions held, and I think that’s one reason he gets so angry when he talks about it. It’s because he doesn’t really understand what a complex issue it is, what a difficult issue it is, he doesn’t understand the court hearings, he doesn’t understand how we’ve gotten where we are — so he just gets mad.”