district state_senate predecessor successor nationality party term_start residence article_title name
31st south dakota tom nelson incumbent american republican january 8 , 2013 spearfish , south dakota bob ewing -lrb- politician -rrb-
 bob ewing
bob ewing -lrb- politician -rrb-

bob ewing is an american politician and a republican member of the south dakota senate representing district 31 since january 8 , 2013 .
