In conservative Mid-West Indiana I can buy that, but you said this:
So how does his Iraq position, and his explicit support of the president, help him there?
Evan's father [who I dislike rather strongly] is an astute politician. As I mentioned, Evan is being groomed very carefully for the presidency. Papa Bayh is aware that taking leftish positions may help in obtaining the nomination, but are counter-productive as far as winning the election. Birch, I believe, is looking at the national election and not the nominating process.