Today’s post is the latest chapter in my series analysing the history of previous parliamentary expansions at a federal level. In my last post, I analysed how the pendulum changed during the 1948 redistribution. For this post, I am going to look at how MPs responded to this new map, which seats were left without a sitting MP at the subsequent election, and how the swing varied depending on whether an MP ran for the seat.
The first expansion of parliament was passed in 1948, and came into force at the 1949 election. It was also the largest increase we’ve seen, either proportionally or in raw numbers. The House and Senate were each expanded by two thirds – the House grew from 74 to 121, while the Senate grew from 36 to 60.
Yes, it’s very early, but I’ve launched my partial guide to the next Australian federal election, due in 2028.
This guide covers the 102 House seats in New South Wales, Victoria, Western Australia and the Northern Territory. These jurisdictions won’t have a redistribution (barring an expansion of parliament). The guide also features guides to the eight Senate contests.
When the new electoral map was published in 1984, it kicked off a game of musical chairs, but with a difference – this time there were more seats than players. Some of these seats were more attractive than others, but it wasn’t simply a matter of every sitting MP moving to the safest possible seat.
If there is a substantial expansion of the size of the federal Parliament, it will be a rare event. It has only happened twice before since federation, and hasn’t happened at all in my lifetime. About two thirds of Australian voters hadn’t cast their first vote before the last expansion in 1984.