Hi Shae, closing the loop for anyone browsing the forum, I think your query has a similar answer to the one I added on your other post: List of postcodes in each WA Region - #2 by Kate
It might be worth enquiring with the Western Australian Electoral Commission for this one, but apart from that you’re probably looking at needed to analyse the spatial datasets for Localities and State Electorates, because electoral boundaries shift based on population changes and don’t relate to locality or Local Government boundaries.