If turnout is lower than expected even by a little bit, that helps the republican. Lowere turnout probably gave Dole Colorado, Montana and most of the south. I think low turnout affected some senate candidates especially in the south.
Colorado was a fairly safe Republican state at that time. Clinton wouldn't have won it in '92 if not for Perot.
As for Senate candidates, the only notable GOP win that year in the South that comes to mind is Tim Hutchinson winning in AR even as Clinton won the state by leaps and bounds.
Roger Bedford was a serious candidate to hold Heflin's seat in Alabama for the Democrats. While Clinton wouldn't win Alabama, higher turnout among base would help him a lot.
