Nash:
If your argument is that the GOP is cynically exploiting people who believe in the judeo-christian God, then I agree with you. I have much bigger issues with them than that one, but you would be right.
If your argument is that this exploitation is unconstitutional then I do not agree with you. Our Constitution is double-edged regarding religion and government. The government may not make laws regarding faith. But all citizens, including those in public office, are free to hold and express political views based on faith.