They work and they vote. There is little passion for Bush or Gore. The largest number of Bush supporters support him because they think he can win and is slightly better than Gore. The largest number of Gore supporters, are voters who want a Democrat and think Gore stands a better chance of winning than Bradley. Add it all up and it equals a volatile campaign.
Elections are unpredictable at best.
The addition of a well funded, skilled candidate, who has a passionate following, running on a third party ticket is not attractive to those running against him. Anything can happen. Buchanan pulls support from the Republican base who do not think Bush is a conservative. They do not like his record as governor. They point to things like his support for School to Work, his support for more state control of charter schools and his teacher pay raise that was not tied to merit.