The Washington Post of April 2 carried an article titled, “The Decoy Effect, or How to Win an Election.” The article quotes Scott Highhouse, who has studied the “decoy effect” at Bowling Green State University, saying “Research on the decoy effect suggests that Nader’s presence (in 2000), rather than taking votes away, probably increased the share of votes for the candidate he most resembled.”
Thanks to Taegan Goddard for pointing out the article, which can be seen here.