Nader didn't take 5/6 of his support from Gore, but he certainly took more votes from Gore than he did from Bush. Florida definitely flips. New Hampshire is iffy because you do have to account for the fact that a chunk of Nader voters would have just stayed home had Nader not been on the ballot.
http://www.cbsnews.com/campaign2000results/state/poll_flop-.htmlNader's votes actually came from liberals who voted for perot in 1996 as a protest vote.
66-33 of them approved of Clinton on his job. and disapproved 66-33 on him as a person.
While fewwwwwwwww of his support came from ideological conservatives.
Most of his voters were young college students that didn't have much income at all.