Check out the Ballot Access News for the latest on which independent parties are on which state ballots:
http://www.ballot-access.org/I think it likely Nader will try for the Green nomination again, but if he runs in 2004 he’ll get fewer votes than 2000.
The reform party will not attract a viable candidate and have even less than the 0.4% they got in 2004.
Libertarians will be on all 50 state ballots and take about the same 0.4% as 2000. Together both the Reform and Libertarian parties will reduce Bush’s vote by about 1%, enough to hurt Bush in close states (His margin of loss in 4 states, NM, WI, IA, OR, in 2000 was less than the vote for either the Reform or Libertarian Party)
Most interesting maybe Kucinich, one of his best friends and major supporters, Haglin, is the founder of the Natural Law party which was on most (maybe all?) state ballots in 2000. This could be the perfect vehicle for Kucinich to carry on as the "true" progressive". Sharpton might want to run as an independent, but I don't think he has any friends willing to give him a party line or the skills to organize a 50 state effort to get on the ballot. Altogether if Nader, Kucinich and/or Sharpton ran on the Left it would probably drain 2-4% from the Democratic candidate, which could help Bush in the close states (he won two states in 2000 by less than the Green vote (NH and FL).