Jolly Roger turned me on to this and there are many great, eloquent blog posts contributing. Mine's short and sweet:
Worship whatever and however you want, but religion has no place in the political process of the United States of America, period. The commingling of religion and government is unacceptable on every level.
Update (Sunday morning ... early):
Sumo directs me to her post, which lays out the nuts and bolts of why I made the statement above.