How does campaigning for these things work? Are there resources allocated from the state to make sure it is an informed decision, or is it entirely up to private interests to do that?
Before that, there is the usual lobbying by different political parties and it depends on the perceived gravitiy of the changes how much you see. There are billboards, discussions in radio, TV and newspapers. Sometimes there are also other groups coming into the public light as happening now eg. with law professors campaigning against the 'Durchsetzungsinitiative' (the discussion about that one is getting more and more heated).