New candidate joins U.S. presidential race

Another presidential candidate, Ralph Nader, is entering the heated race between Democrats Clinton and Obama and Republican John McCain.

Ralph Nader has thrown his hat into the ring for the fourth consecutive time since 1992.

His move follows a NYTimes scandal, which alleged Republican John McCain had a romantic relationship with a lobbyist. Ironically, the controversy helped rather than hindered McCain's campaign. And while Republican's have welcomed Nader's decision to run for president, the Democrats are not so enthusiastic.

Many democrats have held a grudge against Nader since 2000. They claim he drew votes away from Al Gore, thus helping Bush win the election. Nader claims he is not, and has never been a spoiler.

Nader is considered by many to be the father of the consumer movement. He is well known for his attacks on unsafe cars, pollution and the nuclear industry.

Most likely, Ralph Nader won't be sitting in the Oval Office next year. But his candidacy could change the race for the White House.