Republican Josh Mandel says he would limit himself to two terms in office if elected as a U.S. Senator.Mandel says Congress should pass term limits to help weed out career politicians. he faces incumbent Democrat Sherrod Brown in November. Brown was elected to the U.S. House in 1992, where he served until he was elected Senator in 2006. Brown's campaign spokesperson dismissed Mandel's term-limit pledge as a political stunt, noting that Mandel promised to serve a full, 4-year term as state treasurer when he was elected in 2010 -- before he began campaigning for the senate seat.