Senate Majority Leader John Thune previews midterms with Ruthless Senate Majority Leader John Thune, R-S.D., previewed the 2016 midterm messaging for Republicans in an interview with the Ruthless podcast. NEW You can now listen to Fox News articles! FIRST ON FOX— Senate Majority Leader John Thune, R-S.D., previewed the Republican midterm message in an interview with the "Ruthless" podcast out Thursday, saying it would be about safety, economics and opportunity. "For us anyway, it's safer