sentences:  In total, Coleman had challenged 3,377 ballots and Franken had challenged 3,278.These ballots were set aside until the State Canvassing Board could meet on December 16 to decide the fate of challenged ballots.Ritchie's office, however, insisted that each campaign voluntarily withdraw some of their challenges, due to the strain a large pile of ballot challenges would place on the State Canvassing Board.