Ben Nelson for Ag Secretary?

The always-scheming Karl Rove has reportedly approached Democratic Senator Ben Nelson of Nebraska (South Dakota's southern neighbor for those of you out-of-state readers) to offer him the Secretary of Agriculture position in the administration.  If Ben Nelson were to accept, Nebraska governor Mike Johanns would appoint a Republican to take his place, increasing the Senate Republican majority to a cool 56.  It has been widely anticipated that Johanns would mount a tough challenge to Nelson in 2006, so the prospect of becoming Ag Secretary has to be rather tempting to Nelson.