FILE - In this April 9, 2015 file photo, former Maryland Gov. Martin O'Malley greets local residents before speaking at a fundraiser in Indianola, Iowa. O'Malley has spent months investing in Iowa, aiming to repeat the trick pulled by Barack Obama in 2008, when the then-underdog upstart challenger to favorite Hillary Rodham Clinton won the state's caucuses and began his march to the Democratic presidential nomination. (AP Photo/Charlie Neibergall, File)
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