One major problem with your argument is that religious people can (just as incorrectly) say atheists don't have any morals, so they shouldn't be allowed to vote. A mirror of your blog from their side would have a quote from some hardcore bible-banger, explaining how he feels about atheists morality, to support the idea.
Even so it would be unconstitutional to apply a morality test to voters anyway. Some preacher could say people that watch r rated movies are immoral.
is there a good word for anti-religious fundamentalists yet? I guess it makes more sense to just call a fundie a fundie. I hate to be so negative, but your position certainly warrants it.
Amazing!