Civil rights activist Peter Miguel Camejo, an advocate of third party politics, died early today at his home in Folsom, according to Ralph Nader, who notified The Bee in an e-mailed tribute.Nader said Camejo’s wife, Morella, was at his side.Camejo, 68, had been battling lymphoma cancer. Nader said Camejo’s condition had deteriorated over the past few days.Camejo was a third party candidate for state and national office. He was Nader’s running mate in the 2004 presidential election, and attempted three gubernatorial runs in California for the Green Party. In 2002 he garnered 5.3 percent of the vote. In the 2003 recall election, he debated Arnold Schwarzenegger and Gray Davis.”Peter was a friend, colleague and politically courageous champion of the downtrodden and mistreated of the entire Western hemisphere,” Nader said in his e-mail. “Everyone who met Peter, talked with Peter, worked with Peter, or argued with Peter, will miss the passing of a great American.”