Also agree with HonestyBox
There is I think a reasonable school of thought that if you don't like something, get involved, participate, and work to get it changed.
Committing crimes is the absolute wrong way to do this - if you have no money, and you don't like that situation, the solution is not to steal from someone else. I think it sends very confusing messages to the higlhy disenfranchised prison population if we are saying, you made the wrong decision once about how to improve your situation/get what you want, and now we're also going to prevent you from getting what you want in a more acceptable and civilised way.
I know this looks like I am completely overstating the likely importance of voting to the average prisoner, but the message is important as well as the actual practice.
D [still not a liberal lefty BTW]