I hadn't heard about that, actually, and I'm a little surprised, given how much electioneering that such churches have gotten away with over the years. How much further can the envelope be pushed?

The comparison you raise with the civil rights movement is an interesting one. I do see a big difference between religious leaders who speak out about social issues that are important to them, and those who get up into the pulpit and say "God wants you to vote this way." But I don't know whether the law will see such a distinction.