As reported in The Washington Post, Nader also ran for president in 2000 when he got about 2.7 percent of the national vote as the Green Party candidate and played a role in deciding the final presidential outcome. He also ran as an independent in 2004 and got only a tiny fraction of the vote.
Many Democrats blame Nader's participation in the close race between Democrat Al Gore and Republican George Bush in 2000 for tipping the election in favor of Bush. They believe that but for Nader's name on the ballot in Florida, Gore would have been the clear winner and president today instead of Bush.
AAPP: Should Ralph Nader stay out of the race? Well, Obama is not concerned by Ralph Nader's run.