I’d gladly trade a House seat for a Senate seat.
You could very well end up with neither. The House seat needs no explanation. True, Castle seems to be leading Beau Biden by a little bit. However, Castle (to some degree) seems to have more name recognition. Castle leads in the polls because of the number of Democrats who are undecided or unfamiliar with Beau Biden. Given that the overwhelming majority of undecideds in this race are Democrats, and Castle is only ahead by a little bit, one would expect that lead to evaporate once the campaign really gets underway. Additionally, Castle is (correct me if I'm wrong) pretty old, certainly significantly older than Beau Biden. As a result, we can expect Beau Biden to be a stronger and far more energetic campaigner than Castle. I think this will end up playing out much like the Roth vs. Carper Senate race in 2000, except a few points closer (something like a 52-47 Biden victory).