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    South Carolina Gov. Mark Sanford admitted to an extramarital affair during a press conference on June 24, 2009. The high-profile conservative leader -- and possible Republican candidate for the 2012 election -- made the announcement after returning from a secret trip to visit a woman in Argentina and said that he would resign as head of the Republican Governors Association.

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    Sen. John Ensign of Nevada admitted in June 2009 that he had an extramarital affair with a campaign aide throughout the previous year. Ensign did not resign from the Senate, but news of the affair ruined the popular conservative's possible presidential aspirations.

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    Two-time presidential candidate John Edwards admitted to having an affair with former campaign videographer Rielle Hunter on Aug. 8, 2008.

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    Former New York Gov. Eliot Spitzer admitted to having an extramarital affair with former call girl Ashley Dupre.

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    A 1997 Vanity Fair article reported that the married New York City mayor was embroiled in a romantic relationship with his communications director, Cristyne Lategano. In 2000, following his divorce from wife Donna Hannover, it was reported that Giuliani had an extramarital affair with Judith Nathan, a former sales manager for a pharmaceutical company.

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    Former New Jersey Gov. Jim Mc Greevey announced his resignation in August 2004, citing an adulterous affair with another male.

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    In July 2007, Louisiana Sen. David Vitter was identified as a client of "D.C. Madam" Deborah Jeane Palfrey's high-priced prostitution service in Washington, D.C. Vitter, a staunch political conservative, soon admitted to the infidelity and issued a public apology for his "very serious sin."

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    After months of denials, New York Republican congressman Vito Fossella admitted in May 2008 to having an extramarital affair with retired Air Force Lt. Col. Laura Fay, with whom he fathered a child.

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    Former California congressman Gary Condit confessed to having an affair with Chandra Levy after the D.C. intern went missing during a run in Washington's Rock Creek Park.

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    Former senator Larry Craig of Idaho was arrested in June 2007 for homosexual lewd conduct in the men's restroom at the Minneapolis-St. Paul International Airport.

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    Former Florida congressman Mark Foley resigned from office in Sept. 2006 after facing allegations that he had sent sexually explicit e-mails and instant messages to congressional male pages.

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    Former President Bill Clinton first denied his affair with Monica Lewinsky, but then later admitted in grand jury testimony and a later address to the nation that he had an "improper physical relationship" with the White House intern.

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    Republican Jack Ryan's bid for U.S. Senate in Illinois against Barack Obama was cut short in June 2004 after a court demanded release of divorce records which revealed that he allegedly visited sex clubs with his then-wife, actress Jeri Ryan.

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    Former Louisiana Representative Bob Livingston had risen to Speaker-elect and successor of Newt Gingrich in 1998 before allegations of extramarital affairs forced him to step down.

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    Facing explusion from the Senate, Oregon Senator Bob Packwood resigned in 1995 after allegations of sexual abuse and assault of female staffers and lobbyists.

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    Barney Frank, current Massachusetts Representative and openly gay politician, was embroiled in a 1990 scandal when it was revealed that he paid his hired aide Steve Gobie for sex, in addition to providing Gobie personal favors through the power of his office. Gobie also claimed Frank knew of the prostitutes visiting the Representative's apartment, but Frank claimed he fired him for that reason.

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    Illinois Representative Dan Crane was embroiled in the 1983 Congressional page sex scandal, in which he admitted a consensual sexual relationship with a 17-year-old female page.

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    Arkansas Representative and one-time 1972 presidential candidate, Wilbur D. Mills, admitted to alcoholism after two intoxicated incidents with an Argentinian stripper, in whose dressing room he once held a press conference while drunk. Mills is pictured here with stripper, Fanne Foxe.

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    Less than a month after former Colorado Sen. Gary Hart announced his second presidential run in 1987, various news outlets reported he was having an extramarital affair with 29-year-old young model, Donna Rice.