Joe Carter is a great guy (not just because he is a Marine either). He is now editor of Culture 11, a much-needed web site that attempts to explore culture through the eyes of faith. As a member of the Religious Right, he has written a letter to the Religious Right. Excellent reading.
One quote which I think is particularly insightful:
Our allegiance to any political party should be modest, contingent, and made with a full awareness that Republicans/Democrats will attempt to distance themselves from us as quickly after the election as possible.