If you go in and execute a private vote, how the heck do they know how you voted and if you were Catholic, Protestant or Wiccan? Does electronic voting tell them who you are and what you believe? This is crazy.
It relies exclusively on exit polling that is notoriously inaccurate, but it would be insane to try to blame the Obama mess on Catholics when 73% of Catholics did not vote for Obama. And since we still vote by secret ballot anyone who says with any certainty that they know that all the members of their "conservative Protestant" congregation voted for McCain are guessing at best.
Peace be with you.