As others have already said, this is easily something that can be worked out through RP. Just because something doesn't go how you want doesn't mean you always have to bring it to the forums and try to get someone punished. As others have previously said, this is an RP server. How is it not valid RP for a mayor to remove his/her political opponents? This could be solved in game through RP and you would probably have a ton more fun doing so as it changes up the gameplay.
I remember a month or so ago, someone named John had built a gun shop as a front for a preacher to kidnap his customers and then ran for mayor. The interactions between his people and the rest of the server was interesting and fun. Do that. If something happens in game that you don't like and it isn't blatantly ruining the RP experience (RDM, NLR, etc.) then make some fun and interesting RP out of it.