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Third-party candidates could tip vote

An X-factor in some key states

A look at third-party candidates in the 2012 presidential election.

Rocky Anderson, Justice, 61

Background: Former Democratic two-term mayor of Salt Lake City, Utah.

Platform: End foreign wars and war on drugs, single-payer health care for all, campaign finance reform

Virgil Goode, Constitution, 66

Background: Former Virginia Congressman who switched from Democrat to Republican.

Platform: Moratorium on foreign workers until unemployment falls below 5 percent; Congressional term limits; anti-superPACs; eliminate foreign aid; supports gun rights; anti-abortion; anti gay marriage.

Gary Johnson, Libertarian, 59

Background: Former two-term Republican governor of New Mexico

Platform: Legalizing marijuana, pro-choice, same-sex marriage, balancing the federal budget, ending wars.

Jill Stein, Green, 62

Background: Physician from Lexington, Mass.; ran against Romney for governor in 2002.

Platform: Free public higher education, Medicare for all, same-sex marriage, abolish electoral college

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