Here are all possible remaining pairs:
I-R
I-V
I-J
I-G
J-V
J-R
J-G
R-V
R-G
G-V
We will eliminate R-I, R-J, and V-J do to feuding between the parties. That leaves:
I-V
I-J
I-G
J-G
R-V
R-G
G-V
We will eliminate all the additional pairings that should have produced a hammer on Robz888 or Insomniac. Since we voted for each other, G-J and G-V should have resulted in the end of the game. That leaves:
I-V
I-J
I-G
R-V
R-G
We will eliminate all the additional pairings that should have produced a hammer on Voltgloss. Since Jotheonah voted for Voltgloss, G-R and G-I should have produced the end of the game. That leaves:
I-V
I-J
R-V
The interesting thing is what this tells individual people. For instance, if Insomniac is innocent, he should think that J also must be innocent. If Voltgloss is innocent, he has little choice but to conclude that I am also innocent. Galzria, incidentally, qualifies as guilty in none of the final pairs.
I know that some have disqualified I-V as a possible pair. I would disqualify it only because I don't think Voltgloss is mafia, which leaves only the pair I originally proposed this round: Insomniac and Jotheonah. I am still in favor of lynching Insomniac. Aside from being the more suspicious of the two, he technically appears in more of these pairs than J.
So why have J and Insomniac split their votes? Perhaps they know they lost the argument this round, and when Insomniac dies and does come up mafia, J wants to be on record as having distanced himself.
These are just my thoughts at this point. The fact that there is no hammer yet really does support my opinion that the mafia are Insomniac and J (although I admit a Volt-me pairing or an Insomniac-Volt pairing would also produce this result.)