I kind of feel from the starting player pool that there can't be more than four per team. We had 19 players at the start. Four per team leaves room for 8 Citizens and the Journalist, President, and Doctor. If there are five per team I feel we are pretty screwed with the number of Innocents we've lost early.
We still have the President's Turn which could give us some uplift.
Actually both mafia were SMC so one mafia team is down two the other is untouched.