Sydney has been known as the Emerald City since David Williamson’s play was first performed in 1987. Politics in Sydney are quite different from what happens ‘out in the sticks’ in the rest of the state.
New South Wales is the largest state by population and by GDP, the second by per capita income, and the third largest by area. (Both territories have higher per capita incomes) The only sister state relationship in the US is with California. Americans could think of the place as New Yorkifornia with Sydney playing many of the roles that New York, Los Angeles and San Francisco play in the US.
Apart from 1961, no-one has ever won a federal election without winning a majority of seats in NSW. The state elects 47 of the 150 MHRs and 12 of the 76 senators. Population shifts over the last few decades have tended to transfer 1 seat to either Queensland or Western Australia at each re-apportionment. The state has provided 6 of the last 10 prime ministers. ABC Vote Compass has thoughtfully posted a list of the most left-leaning and right-wing electorates in the country. NSW has 3 of the most left-leaning and none of the most right-leaning seats.
In the 1920s NSW briefly adopted STVPR. This led to a hung parliament where the Industrial Socialist Labor Party (an organisation close to the International Workers of the World) elected a single MLA who held the balance of power. STVPR was abolished in 1926, in reaction to the horror of a Wobbly balance of power.