It seems to me that if President Bush had not invaded Iraq, he would be heading toward a comfortable re-election. As it is, not only has the occupation soured many Americans, but the uncertainty over whether and when the war would start and end probably delayed the recovery. (Any disagreement on this point in the Corner?) I am hearing a lot about the intra-Republican bloodletting that will supposedly ensue if Bush loses. And it is true that there will be Republican infighting on social issues. There always is, and the lack of a socially conservative incumbent president will change the balance of forces within the party on such issues as embryonic stem-cell research. But won’t most of the factions simply conclude that the invasion of Iraq was a political mistake not to be repeated?