Peereboominc

I have no idea about Nim but have you checked Go (Golang)? It does the things that you need: single binary, cross compile, easy to learn (except methods on an object are a bit weird at first).

Next to that it is also stable, not dying soon and lots of dependencies to extend the language.

Anyway, if you like Nim, go for it.

Why even have the system with districts? Just calculate all the votes and see who wins? If you live in a place where most people vote x, why even bother to vote y. Your vote will go straight in the bin.