As a self-proclaimed "airport economist", I travel a lot and have seen the election system at play in many economies (nay countries).

In lead-up to the Australian election, I thought about the passengers who pass through the three terminals of Sydney Airport and how, in some sense, they represented the demographics of the Australian electorate.

In Terminal 1, the international terminal, you have a mix of regular business travellers from corporate Australia. They are a mix of high-income, mainly Liberal Party voters but with some professional class Labor Party voters and Greens as well.