Beese, there are 27 people on the list but only 25 people accounted for on the list of roles... what's with that?
Anyway...
It's set in stone that there were 8 Mafia at the beginning, 1 serial killer, with the rest of the us as townies with various roles. There are two Mafia Groups, each with 4 players which means that there is a chance that they might kill one of the other side. On the first day, nobody was lynched, that is quite clear. At night, two people died and Vorsprung was saved.
There are several things that can be gathered from this. 3 people will die for the next few nights, and only one will die in the morning. With two people dead, we can gather only one solid fact: The serial killer is still alive.
There may be 3 Mafias left on each of the Mafia factions, 1 Mafia killed (leaving 3 in one team) and the other death a towny, 2 Mafias left on one group and 4 in the other, or 2 townies dead with no mafia killed. Chances are that all the deaths were townie, if you consider probability. Today is morning and this is the only chance that townies as a whole can get somebody killed. Tomorrow, two or three people will die again.
There will probably be a higher population that is in the townie group. Due to this, the three factions (2 mafias and one serial killer) will be killing people at a faster rate than we can lynch them. Therefore, lynch, because you can be sure that they have no qualms about killing us off.