This is an important article about Nader that suggests his real motive in 2000 was to punish the Democrats for not adhering to his agenda over the years. He was especially angry at Clinton and passionately hated Gore, according to this. It is a long article, but here are two snippets that give a feel for what is said:
http://www.soc.qc.edu/Staff/levine/Ralph-Nader-As-Suicide-Bomber.htmlIn Tarek's unforgettable phrase, Ralph Nader wanted to hurt, wound and punish the Democrats. This was much more than indifference. Nader was not simply opposed to helping the Democrats, he actually wanted Gore to lose. He didn't particularly want to elect Bush, but his desire to punish the Democrats out-weighed that. It also seemed to me that the desire to hurt Gore was not Tarek's personal mission, it was his beloved uncle's crusade.
Further, I had learned that the campaign's mission of punishment trumped getting political influence for Nader and for the causes he had long fought for. It trumped the potentially brutal effect of a Bush presidency on many Americans and other innocent people around the world. Punishment wasn't Nader's only campaign goal, just the most important one. But his supporters were not being told this. The campaign was not putting on their banners the motto: "Vote For Ralph Nader Because He Wants To Punish, Hurt And Wound The Democrats."
snip
Then, in October 2002, the reporter Jonathan Chait published an article titled "The Man Who Gave Us Bush" in the magazine The American Prospect. It was technically a review of two new books, Justin Martin's biography (Nader: Crusader, Spoiler, Icon) and Nader's own book about the campaign, Crashing the Party. Chait, however, had more in mind than book reviewing. He used the space to make a thoroughly-argued case that Nader intended to defeat Gore and that he had lied throughout the campaign to disguise this. A few others had said this in print before, but only briefly. Armed with new information from the two books, Chait launched a full-scale attack on Nader's career and credibility. Although Chait was, I think, overly dismissive of Nader's many earlier achievements, his arguments about what Nader intended and did in the campaign are sound.
Nader ran for president based on his reputation for honesty and truthfulness, for being a reformer who tells it like it is. But in order to justify what he was doing, throughout his campaign, and then in his book, Nader misled and misinformed his often young followers in a multitude of ways. Chait described well the techniques Nader used to fend off questions that he could help Bush.