Washington, D.C. ? Former Republican Rep. Bob Barr launched a Libertarian Party presidential bid Monday, saying voters are hungry for an alternative to the status quo who would dramatically cut the federal government.

His candidacy throws a wild card into the White House race that many believe could peel away votes from Republican Sen. John McCain, given the candidates’ similar positions on fiscal policy.

Barr, who has hired Ross Perot’s former campaign manager, acknowledged that some Republicans have tried to discourage him from running. But he said he’s getting in the race to win, not to play spoiler or to make a point.

Barr first must win the Libertarian nomination at the party’s national convention that begins May 22. Party officials consider him a front-runner thanks to the national profile he developed as a Georgia congressman from 1995 to 2003.

Barr, 59, quit the Republican Party two years ago, saying he had grown disillusioned with its failure to shrink government and its willingness to scale back civil liberties in fighting terrorism.