Ralph Nader could be poised for another third party presidential campaign.

The consumer advocate will appear on NBC's "Meet the Press" on Sunday. Nader launched his 2004 presidential run on the show.

A spokesman for Nader did not immediately return a call seeking comment.

Kevin Zeese, who was Nader's spokesman during the 2004 presidential race, but is no longer working for him, said Friday that Nader has been actively talking to "lots of people on all sorts of levels" about the possibility of making another run.

Zeese said he could only guess what Nader might do, but added: "Obviously, I don't think ("Meet the Press" host) Tim Russert would have him on for no reason."

Last month, Nader began an exploratory presidential campaign and launched a Web site that promises to fight "corporate greed, corporate power, corporate control."

Nader's appearance on "Meet the Press" was announced Friday in an e-mail message from Nader's exploratory campaign. The message from "The Nader Team" urges supporters to tell friends and family to watch the show and requests online contributions.

"As you know, we've been exploring the possibilities in recent weeks," the message says.

Nader is still loathed by many Democrats who call him a spoiler and claim his candidacy in 2000 cost Democrats the election by siphoning votes away from Al Gore in a razor-thin contest in Florida. Nader has vociferously disputed the spoiler claim, saying only Democrats are to blame for losing the race to George W. Bush.

Though he won 2.7 percent of the national vote as the Green Party candidate in 2000, Nader won just 0.3 percent as an independent in 2004, when he appeared on the ballot in only 34 states.

Nader was forced to fight dozens of court battles over ballot access in 2004, as Democrats pressed legal challenges over whether he gained enough legitimate signatures to get his name on the ballot.

Democratic National Committee spokeswoman Stacie Paxton declined to discuss how the party would respond to another Nader candidacy.

"The Democratic Party represents the change the American people are looking for and I'm confident we'll put a Democrat back in the White House in November," Paxton said.