I won't vote because I'm not a Bush voter, but I must point out that America cannot become a theocracy until the First Amendment is changed "Congress shall make no law respecting an establishment of religion, or phohibiting the free exercise thereof;..."
To change the US Constitution, you need the vote of 2/3 of both houses, or have 2/3 of the states support the amendment. Then 3/4 of state legislatures (or special ratification conventions) have to approve for the proposed amendment to take effect.
The religious diversity in America would be too much for this, and the only people who would really go for this are the far right/fundamentalist Christians, who are not in the majority at all.