Ralph Nader said Sunday he will run for president as a third-party candidate, criticizing the top White House contenders as too close to big business and pledging to repeat a bid that will “shift the power from the few to the many.”

Nader, 73, said most people are disenchanted with the Democratic and Republican parties due to a prolonged Iraq war and a shaky economy. The consumer advocate also blamed tax and other corporate-friendly policies under the Bush administration that he said have left many lower- and middle-class people in debt.

MONTREAL (Reuters) - Consumer advocate Ralph Nader said on Monday he will decide soon on whether to make a another bid for the White House in 2008, eight years after playing a key role as a third party presidential candidate.

“I’ll decide in about a month,” he said in an interview broadcast on CBC Radio’s Daybreak show in Montreal.

“What I’m deciding on right now is whether we can get enough volunteers, enough financial resources to overcome the huge ballot access obstacles, which you don’t experience here in Canada, but which are the worst in the Western world in the United States,” said Nader, who will turn 74 on February 27.