I think NH also would have switch from Bush to Gore assuming ALL of Nader's votes went to Gore. (Some would not have voted at all and some would have voted for Bush, so you can't say for sure.)
IRV is better than what we have now, but had problems.
http://www.electionmethods.com . (Sorry if I sound like a broken record as I have said this on a few other threads.)
In early 2008, Nader needs to hype a big announcment and the media will begin talking if he will run for President. Then Nader has it and gives a big speech promoting several third party candidates. Hopefully the media would continue the coverage, but it's doubtful.