The National Republican Senatorial Committee seized on Bill Nelson's comments as polls show the incumbent vulnerable to a strong challenger. Former Sen. George LeMieux, former state Rep. Adam Hasner, former Ruth's Chris CEO Craig Miller, retired U.S. Army Col. Mike McCalister and businessman Ron McNeil are competing in the Republican primary. "It's hypocritical for Sen. Bill Nelson to say that President Barack Obama has made some mistakes during his tenure, when the reality is that Nelson has voted with Obama over 97 percent of the time in Washington and is just as responsible for those mistakes,'' said NRSC spokesman Jahan Wilcox. "From Adam Hasner's ethics violation to George LeMieux's ties to corrupt GOP chair Jim Greer, even rank and file conservatives in Florida are disgusted with the field of Republican Senate candidates. The only thing that unites Republicans in that race is their determination to end Medicare in order to preserve tax breaks for oil companies," responded DSCC spokesman Shripal Shah.