Published: Jun 09, 2011 8:05 PM EDT
Updated: Jun 09, 2011 8:05 PM EDT

WASHINGTON (AP) - Newt Gingrich's campaign manager and numerous other key aides have resigned together, a strong blow to his hopes for the Republican presidential nomination.

Ginrgrich press spokesman Rick Tyler told The Associated Press that he's resigned along with campaign manager Rob Johnson, senior strategists and aides in key early primary states.

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