Possible Clues:

• He fights the good fight
• Candidate trailing Bush and Gore
• Socialist article rejected reason why Bush may have won Florida in 2000?
• Green Party presidential candidate
• Subject of the 2007 documentary 'An Unreasonable Man'
• Public Citizen co-founder
• Former Green Party candidate
• Activist who had Raiders
• 'Civic Arousal' author
• 1996 Green Party candidate for President