An extra ballot would not have made any difference.
The McCain supporters would still have supported Huckabee, just on the 3rd ballot instead of the 2nd.
not if there were huckabee defections. Remember huckabee voters are just there because they hate mccain and may have jumped to romney based on mccain manipulation.
we will never know.
This is just big boy vote splitting politics.
It also proves the fact that huckabee is just a useful idiot for mccain.