Scary thought. If that's the case in SD, we might have to say hello once again to "Senator Daschle."
Even in that circumstance, the Gov. would appoint some 90-year-old who wouldn't run again.
Does the law specify how long the replacement has to be a member of the party of the senator he's replacing? If not, then a Repub could simply change his party registration to D and get appointed with no legal problems.