The main leads can explain how they set up the trap to catch the mafia and how they succeeded. They can also relate it to how the mafia tricked the citizens by framing the bullies, and how they might do it again. The way the bullies were killed suggests that someone with a grudge killed them, as everyone who was executed by the mafia died less brutally. They can also mention that Da Beom was the last one with the bully. Everything points to Da Beom.
The glasses dude would probably get voted out in episode 11 and we will see what will happen to Da Beom and the other mafia in episode 12. How would they cover everything in two episodes? Would the ending be rushed, leaving us with unanswered questions?