I think you mean Nebraska's Senator Ben Nelson. With Zell Miller retiring, he'll be the last remaining conservative leaning Democrat.
Note that the media doesn't worry about the declining number of conservative Democrats, but the declining number of (ahem) moderate Republicans worries them greatly.
The desperation of the liberals makes me more gleeful than I should be allowed. :-)
Nope. Ken Salazar from Colorado is joining Nelson. And he knows his state went big for Bush.