Republican presidential frontrunner Mitt Romney notched a razor-thin win in Midwestern Ohio's presidential primary - the most closely watched test in the 10-state Super Tuesday nomination stakes. The former Massachusetts governor had 38 per cent of the Ohio vote compared to 37 per cent for leading rival Rick Santorum, according to a report of DPA. Romney, 64, won other primaries in Vermont, Virginia and his home state of Massachusetts, plus the Idaho and Alaska caucuses, on the biggest day yet in the race for the conservative party's nomination to challenge President Barack Obama in the November general elections. The next Republican contests take place Saturday in Kansas and March 13 in Alabama, Mississippi and Hawaii, as the race turns more toward the South and Midwest in the coming weeks. "I stand ready to lead our party and stand ready to lead our nation to prosperity," Romney told supporters in Boston.
