I'm remembering a comic book/graphic novel/magazine such as Eerie or Creepy from the mid 70s to mid 80s. The drawings for at least one issue are all black and white, the story is told in several parts.
The overall story is present day, of some satanic/demonic/sorcerous cult or sect where a new leader must be chosen. The leadership selection proceedings are a bit like the election of a pope, and at least one of the people trying to become the new leader is indeed an R.C. monsignor/bishop/archbishop who joined the cult/sect/whatnot because he felt that the Catholics have been systematically subverting his rise to absolute power, so he's getting personal power for himself this other way.
The selection might be by discussion, but seems more to be by having familiars combat by proxy. Someone - I think it might be the clergy member - is in a bit of disgrace because instead of showing up himself, or having a familiar show up, he sent in an actual demon in disguise, presumably to kill anyone else present.
A result of each failed electoral meeting is a dead body, where the bodies are getting dropped in very particular assorted locations across some large city. I think the police are treating this as some sort of series of odd killings, but there is a researcher or group that knows what is going on, does not know who is involved, and is also tracking where the bodies are turning up, because the pattern of body placement will tell where the final meeting and decision will take place.
The one particular issue that I'm remembering and working from starts with some people having a discussion, commenting on some woman nearby, with a statement that yes, after... apparently one of the selection meetings or combats... she's been screaming nonstop for at least three days - I think she might have been one of the familiars in such a electoral meeting. There is one panel of her huddled on a floor by a wall. The people having the discussion look at a map and the location of the latest body that's turned up, and note that the cult/sect followers are tracking the locations of the bodies, where that final meeting is coming up very soon.
I have a very general memory that one of the researchers is lighting matches, then breaking them, then dropping them, and then when enough of them have been dropped on a map, the researchers suddenly realize the pattern of dead bodies is starting to outline a pentagram. At some point in the issue episode, the story cuts to the clergy member, wherever he lives, mulling over the next move on his part, and complaining that y'know, if the Catholics had just given him the power that he deserves, etc.
What is the title of the story and the magazine it appeared in, and what are the dates or issues or both?