I don't know much about John Kyl, but if John McCain is pushing him for a run in 2012, I become very leery.
The US Senate is described as "the most exclusive club in the world" and I'm sure everyone there is very clubby. It is also said that every single Senator gets up in the morning, stands in front of the bathroom mirror, and sees a president looking back. Historically, this is nothing but wishful thinking. In the last election, a Senator became president, because no one else was running. Usually a Governor does a lot better as he or she can claim to having executive experience beyond managing their own re-election campaign.
McCain is an idiot. Kyl is a Senator. Move along here. folks. Nothing to see here.