(I'm going to break character for a moment to explain the current situation.
As I alluded to, I am the townie who has the metroid item. I have chosen to divulge this reason for two reasons, firstly, in order to possibly form a townie alliance down the line, but secondly, and more importantly, in order to acquire the doctor's protection so that one of the Samus players can't randomly kill me off and acquire the metroid.
Voting me out now is a terrible idea for everyone involved.
If I am voted out than the metroid will be randomly reassigned to another player which may include either the Samus or Dark Samus roles which this early on would prematurely end the game unless you get really lucky with tomorrow's vote, since them acquiring the metroid would trigger one of their win conditions.
For a townie the reason to keep me alive is pretty simple. Much like the last game, I am in a situation where I can serve as the public face for a possible townie alliance, relaying information from the detective and possibly allowing some degree of coordination between the detective and the vigilante.
For the mafia, the reason to not vote me out is pretty easy as well. You know I have the Metroid, and you cannot win without getting the metroid so keeping me alive for now means that whenever you decide to kill me off, the Metroid will be more likely to fall into your hands since the playerbase will have dwindled.
Right now there are 18 players in the game. 4 of them are mafia. If I am voted out now than there is less than a 1 in 4 chance that the metroid will fall into your hands. (there is also around a 1 in 8 chance that one of the Samuses will get the metroid which would be really bad.) Should the metroid fall into the hands of another townie which is the most likely scenario, that townie will likely choose not to divulge that they have the metroid since the last guy who did that got voted out so you'll just be back to not knowing where the metroid is.
For Samus or Dark Samus like with the Mafia, you know I have the Metroid. Voting me out will almost certainly cause the Metroid to fall into the hands of another player who you don't know the identity of and thus send you searching for a needle in a haystack.
As long as the doctor is alive, the Metroid will be safely in my hands. Anyone who has any interest in winning this thing is stuck with me.)