"In any two-party state" what? That's such a weird thing to say. Two-party systems are a worse version of applied democracy, that should be incredibly obvious. I just seriously don't understand why you would even think about saying that it's a crime in two-party states only, it's so odd. If anything two-party states are more akin to not having strong laws against that because of the very fact of it. Look at the US, which I'm guessing is a big part of your mind in this. Do yourself a favor and search for countries two-party systems and their laws on this compared to actual democracies with more parties.