Senators discuss, debate and vote. They get briefed by staff. The may or may not come to understand the issues. McCain did not. He does not understand economics and Iraqi politics.
He postures and acts tough. He has always been emotionally unstable.
There is a difference between 26 years of experience and one year of experience 26 times.
McCains’s top two advisors (Gramm and Scheunemann) are poster children for failed GW Bush policies.