I saw this recent article on McCain's debating skills. I did watch some of the RNC debates, and McCain did manage to repeatedly get Romney to lose his cool by lieing about Romney alleged support of Iraq withdrawal timetables, which did not play well in front of GOP audiences. Romney repeatedly melted down, then interrupted McCain, which made an impression, as McCain sat there grinning in a condescending manner, as Romney sputtered about McCain's lies.
http://www.nytimes.com/2008/09/23/us/politics/23mccain.html?_r=1&adxnnl=1&oref=slogin&adxnnlx=1222281353-fnGYWO2qP0J4lXa8WIaKfQ/snip
He has used fairly consistent techniques during his roughly 30 debates on the national stage: he is an aggressive competitor who scolds his opponents, grins when he scores and is handy with the rhetorical shiv. Just ask Mitt Romney, whom Mr. McCain filleted on several occasions in debates during the primaries, perhaps most infuriatingly for Mr. Romney when Mr. McCain misleadingly asserted that Mr. Romney favored a timetable for withdrawal from Iraq.
A review of several of Mr. McCain’s debates shows that he is most comfortable and authentic when the subject is foreign policy. And in a stroke of good fortune, foreign policy is the topic for Friday, the first of three 90-minute debates with Senator Barack Obama, the Democratic nominee.
/snip
Here is the NY Times video preview of the debate:
http://video.on.nytimes.com/?fr_story=a2436819abf89ee8d3f4f571e7895c4309265b0d