Gary Johnson

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**FILE** Former New Mexico Gov. Gary Johnson announces his bid for the Libertarian Party presidential nomination on Dec. 28, 2011, in the rotunda of the New Mexico State Capitol in Santa Fe, N.M. (Associated Press/The New Mexican)

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Former New Mexico Gov. Gary Johnson got invitations to participate in two of the debates for Republican presidential candidates. (Associated Press)

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Gary Johnson

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Republican presidential candidates from left, former New Mexico Gov. Gary Johnson, former Pennsylvania Sen. Rick Santorum, former House Speaker Newt Gingrich, Rep. Ron Paul, R-Texas, Texas Gov. Rick Perry, former Massachusetts Gov. Mitt Romney, Rep. Michele Bachmann, R-Minn, businessman Herman Cain and former Utah Gov. Jon Huntsman gather prior to a debate, Thursday, Sept. 22, 2011, in Orlando, Fla. (AP Photo/Phelan M. Ebenhack, Pool)

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"I do have a resume that suggests that I am very credible," says former New Mexico Gov. Gary Johnson. (Barbara Salisbury/The Washington Times)

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Former New Mexico Gov. Gary Johnson announces his plans to seek the Republican nomination for president in front of the Statehouse on Thursday in Concord, N.H. Mr. Johnson says he has the resume needed to lead the country. (Associated Press)

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ASSOCIATED PRRESS Gary Johnson, former governor of New Mexico and potential Republican candidate for president, has by his count addressed 450 different groups, journeyed to Iowa and to South Carolina four times each and visited New Hampshire six times in the past 14 months.