Two choices on that ~ (1) Senator Hatch who will become the seniormost Republican Senator, or (2) Thad Cochran. Wiki says "Cochran's voting record is considered fairly moderate by Southern Republican standards. He has a lifetime rating of 80 from the American Conservative Union. In 2008, he garnered a rating of 68 from the ACU; the only Republican Senators from Southern states to score lower were Mel Martinez of Florida and John Warner of Virginia."
You guys sure scored a major victory ~ gave it to a Souvrn'Leftwingtard. THEY (meaning Souvrn'rs) never vote them out!