In this Saturday, April 12, 2014 photo, the five candidates seeking the Republican nomination to run for the U.S. Senate seat being vacated by the retiring Democratic Sen. Tim Johnson, from left, ... more 
In this Saturday, April 12, 2014 photo, the five candidates seeking the Republican nomination to run for the U.S. Senate seat being vacated by the retiring Democratic Sen. Tim Johnson, from left, former South Dakota Gov. Mike Rounds, state Rep. Stace Nelson, Sioux Falls physician Annette Bosworth, Yankton attorney Jason Ravnsborg and state Sen. Larry Rhoden, participate in a debate in Pierre, S.D. The deadline is Tuesday, April 15, 2014, for all the U.S. Senate candidates to file their quarterly FEC reports. (AP Photo/Capital Journal, Nick Lowrey) less 
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Associated Press | Photo By Capital Journal, Nick Lowrey
Tue, Apr 15, 2014 1:30 PM EDT