John Bolton, the former US permanent representative to the United Nations, endorsed presidential candidate Mitt Romney Wednesday.
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John Bolton endorses Romney
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Former presidential candidate Romney still running
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Former president Bush to endorse Hutchison
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Former Mass. Gov. William Weld, a Republican, endorses Obama for 'ability to unify'
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Mitt Romney trumpets conservative endorsements
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Tommy Thompson endorses McCain
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Romney clinches Republican nomination
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Romney returns to New Hampshire
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Romney visits former president George hw Bush
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Jindal endorses McCain for president
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Kid Rock supports Mitt Romney!
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Clark endorsed on first ballot
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Michele Bachmann finally decides to endorse Mitt Romney
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Kirk to endorse Romney for president
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Mitt Romney to join son's investment firm
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Haridopolos endorses Romney
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McCain clinches us Republican nomination