Robert Novak had an interesting column last week on Lincoln Chafee, the Rhode Island senator that may hold the balance of power in the senate, should the GOP pick up exactly one seat in the upcoming election. He has dismissed such reprts, but always in a coy manner that hints that he is not averse to the idea, if he sees a personal gain (or perhaps for his constituents).
The column also mentions Zell Miller, the Georgia Democrat who is Chafee's mirror image. Miller often works with the Republicans, just as Chafee often works with the Democrats. However, Miller is not willing, at his age to change.
Nevertheless, Miller at age 70 speculates that he might cross the aisle if he were 20 years younger.
The article is an interesting (albeit rather flattering) article about someone who seems to relish the interest both parties are investing in him. Check it out.