There is a chance that this election will begin a significant realignment in American electoral politics. Catholics, once a reliable Democratic constituency, may be switching parties. Snip The latest Gallup Poll, released yesterday, has the race almost tied among Catholic registered voters, 50 percent for Kerry to 48 percent for President Bush. But that’s not likely to be the final result on Election Day. Gallup’s data show that Bush leads Kerry handily, 51 percent to 44 percent, among “good Catholics,” those who actually practice their religion. This is important because practicing members of any faith are more likely to vote....