There really isn't anything new about this. Haven't you seen the democrats standing in the pulpits for years doing the Baptist preacher campaigning thing, while attacking any Pubbie who would dare speak anywhere near a Church? Church goers are citizens too, and have every right to hear what the candidates who decide our future have to say!
Before the California Governor recall election, Clinton was shown live on local tv with Davis in a black church (at the pulpit with the preacher).
Davis also made the church/temple/mosque rounds for weeks prior to the election.