POLITICS
05/23/2014 11:18 am ET Updated May 23, 2014

Source Of $1.5 Million Donation To GOP Senate Candidate May Never Be Revealed

ASSOCIATED PRESS

Arkansas is witnessing what may be the most expensive political ad campaign in state history: $1.5 million-worth of glowing TV spots hailing Tom Cotton, a Republican congressman who's running against Democrat Sen. Mark Pryor.

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