GOP challengers

Republican senators are attacking GOP challengers earlier and more aggressively than in past elections, including using opposition research to try to knock out upstart rivals before they become serious threats.  Photo by Mark Wilson/Getty Images)

GOP Senators Using ‘Opposition Research’ To Fend Off Tea Party Challengers

Republican senators are attacking GOP challengers earlier and more aggressively than in past elections, including using opposition research to try to knock out upstart rivals before they become serious threats.

02/25/2014

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