Not surprising that McCain's canidacy may be "dying before our eyes."
A couple of things recently have caused me to write him off. First, his hypocrisy on campaign reform. Second, his recent attack - totally unnecessary - against Don Rumsfeld as "one of the worst" defense secretaries in history. The attack was completely unbecoming of a presidential candidate, and reinforces McCain's image as a person likely to fly off the handle at any given moment. Add to that, an attack against Dick Cheney - again unnecessary - with an apparent private apology to Cheney afterward.
This does not present the image of either a stable or consistent individual, and it explains why McCain is falling fast.