40% of our state is out-of-bounds for development as it's world heritage area, and the green party was given birth here. We basically have no industry left and the lack of development has the effect of being stuck in a time warp. I can imagine anti-light pollution ordinances could be pushed through without much difficulty at all.
I admit I have absolutely no knowledge of Tasmanian politics being 18,000 km away. Perhaps it would be worth lobbying in that case. People who never get to see the glory of the night sky are deprived in my opinion.