Assuming the Republicans keep the House, this may not be just the election of a majority leader, but the selection of the next speaker.
The Republican leadership in the House is more ideologically homogenous than parties have been in a century. You don't find great variation in policy positions.
Suppose you're on some committee - say the Transportation Committee, and a major transportation reauthorization bill is in the works. If you're managing the bill, you're going to make sure that the speaker's, majority leader's and whip's districts are treated pretty well.
The real problem he faces is that 2006 is an election year, and he will be a lame-duck majority leader. His capacity to put together deals in the Senate will be limited by the fact that he has nothing to bargain with.
My sense is that he's said what he's going to say about his family and feels that there's no need to bring further attention to them.