religion, the presidency, and public appeal

Atheist Revolution had some insightful statistics:

• 78% of Americans have favorable views of presidential candidates citing the Christian bible when speaking about their political positions.
• 75% of Americans believe that it is appropriate for each President to be sworn into office on a Christian bible.
• 60% report that they would be more likely to vote for a candidate who "speaks publicly about following the example of admirable leaders from the Bible and who consistently uses the Bible for guidance in both public and personal matters."
• 50% would not vote for an atheist.

But for me, the real question is--which and how many presidential candidates throw out the god card just to win?