Complex sentence: Since then the only Democratic presidential nominee to carry Dorchester County has been Bill Clinton in 1996, although the county has trended less conservative in recent years with Barack Obama coming within five percentage points of beating Mitt Romney in 2012.
Split into simpler sentences: Since then the only Democratic presidential nominee to carry Dorchester County was Bill Clinton in 1996. The county has trended less conservative in recent years, with Barack Obama coming within five percentage points of beating Mitt Romney in 2012.