(CNN) - Former Republican Rep. Bob Barr formally jumped into the White House race Monday as a candidate for the Libertarian Party's presidential nomination.
Barr, the onetime darling of conservatives who led the impeachment fight against former President Bill Clinton, said he is running because voters want a choice beyond the two political parties.
"They believe that America has more and better to offer than what the current political situation is serving up to us," he said Monday at the National Press Club in Washington. "The reason for that is very simple, they believe in America as I believe in America. We believe in an America that is not and should not be and should never be driven by fear as current policies on behalf of both parties are in this country."
Barr, 59, represented Georgia's 7th congressional district from 1995-2003, and became an increasingly vocal critic of President Bush, especially over the president's support of the Patriot Act. He formally left the Republican Party in 2006.
It remains unclear how much support he will draw, but CNN's Bill Schneider says Barr could be to John McCain what Ralph Nader was to Al Gore in 2000.
"If this is an extremely close election, even if Bob Barr gets a handful of votes, it could make a difference, just as Ralph Nader once did," Schneider said. "He is a conservative who attracts mostly Republican voters. He is critical of the Iraq war. McCain supports the Iraq war. There are many conservatism and Republicans who ware critical of the war in Iraq and some of them may decide to vote for Bob Barr to register their protests.
Related Video: Watch Senior Political Analyst Bill Schneider give his take on Barr's entry to the race and the latest superdelegate count.