Republican hopes of picking up a Senate seat in North Dakota next year are riding on one man: former Gov. Ed Schafer. The Sioux State's Republicans readily admit that the popular two-term ex-governor represents their last, best hope of defeating Sen. Byron Dorgan (D) and cracking a surprisingly tough nut -- the all-Democratic congressional delegation that represents this predominantly Republican state. Schafer, who has returned to the private sector since leaving the governor's mansion four years ago, told The Hill he was not interested in returning to public life. But he did not slam the door shut. "In this business,...