Mike Castle Supporting the Lesser of Two Sleazeballs

What's a moderate Republican to do? The News Journal reports that Mike Castle is supporting John Boehner of Ohio for the post of House majority leader:

Castle, one of the leaders of the House's moderate Republican wing, said Boehner seems more open to working with moderates than the current party leadership.

Actually, the marble figures in Statuary Hall are more interested in working with moderates than is the current GOP leadership. Yes, Boehner and Roy Blunt of Missouri, the acting majority leader, have finally noticed that their caucus have an integrity issue. The Washington Post reports that the two leading candidates for Tom DeLay's old job are fighting over who's more tainted by connections with lobbyists:

Both camps this week have been pointing to the other's well-documented connections and activities, some of which are the stuff of legends. They include Blunt's failed effort to insert a provision benefiting Philip Morris USA into the massive bill creating the Department of Homeland Security and Boehner's distribution of checks from tobacco concerns in 1995 to lawmakers on the House floor. Also of note are both men's prodigious fundraising activities, some of which involve individuals and clients with ties to Abramoff.

It's hard to see how either of these two, who are up to their necks in tobacco money, can claim the moral high ground here. Blunt is said to have taken DeLay as his role model, while Boehnert is a protege of Newt Gingerich, who looks downright statesmanlike compared to this sorry bunch. (File under damning with very faint praise.)
Once again, we see the dilemma for Mike Castle: How can he represent the interests of Delaware as part of a caucus dominated by far-right lawmakers in bed with big money lobbyists?