Screen graphic of Rick Santorum and Rick Santorum
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Super Tuesday: Republicans battle for victory

Republican presidential candidate Mitt Romney has won a tight race against Rick Santorum in the key state of Ohio.

Four candidates, Mitt Romney, Rick Santorum, Ron Paul and Newt Gingrich, are competing in ten states on what is known as Super Tuesday.

Steve Kingstone reports.

  • 07 Mar 2012