Joe Martin, of Sioux Falls, South Dakota, center, listens to U.S. Rep. Ron Paul, R-Texas, speak during a news conference at his newly opened Iowa campaign office, Tuesday, May 10, 2011, in Ankeny, ... more 
Joe Martin, of Sioux Falls, South Dakota, center, listens to U.S. Rep. Ron Paul, R-Texas, speak during a news conference at his newly opened Iowa campaign office, Tuesday, May 10, 2011, in Ankeny, Iowa. less 
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Associated Press | Photo By Charlie Neibergall
Tue, May 10, 2011 7:40 PM EDT