Politics in the church. The Republican party has been sending people to churches in many states, including Oregon, to "get out the vote." Critics say that it endangers the church's tax exempt status, stating that it's pretty obvious that they are premoting the GOP and slamming the Dems during these talks.
It sounds to me like the speakers at these events are saying that churches should support voter registration efforts in a non-partisan way, while pointing out the differences in the two parties in a way that show that the GOP is more in line with most of the members of these churches.
But I don't see anything wrong with that. Isn't the NAACP a tax exempt organization? I don't think anyone would bat an eye if a Dem gave a talk to the NAACP and did the exact same thing.