I think you are missing the point. Most people
afraid of Nader running are afraid he will take
votes from Kerry, thus allowing Bush to win when
otherwise he wouldn't. Had Nader not run in 2000,
Gore would have one, despite Florida.

Of course, the real evil is the two-party system,
and Nader knows this. However, I think that he
overestimates himself (or, rather, the reaction
to him) when he says that the influence of him
running will cause folks to reform the system.
The system can be reformed only by the current
two parties, and they won't, since they would give
up more than they gain.

What is the lesser of two evils? I think the
lesser is for Nader not to run if Kerry otherwise
has a chance, rather than allowing Bush to win
while showing up the perversity of the system.
Intelligent people already realise it is perverse,
others won't be convinced, especially if it hurts
the left, not the right.

Kerry should have offered Nader the vice-presidency in return for not running, with a promise to really change the system if he is elected.

But it won't happen.