I think the best solution to this would be a referendum.
Yes let one of Western Germany's poorest Länder waste money, time and publicity on a referendrum which everybody know will end with a Yay and less than half voting and will serve nothing except making people even more tired of politics than they are.
And I'd also prefer to keep these American style moral issues out of the general political discourse. It's bad enough that it's turning into a debate. It'd be even worse if a referendum campaign had to be conducted.
Poll
