For many years now, Australian political scientists have pointed out that established partisan allegiance is in decline. In 1967, 36% of Coalition supporters and 32% of Labor voters reported lifetime voting for their side. At the 2022 election, the Australian Election Study found the figures to be 16% and 12%.
These changes help to explain the rising support for independents and minor parties at federal elections; they now take about a third of the primary vote.
So much for voters. What about for politicians? Of course, there have always been plenty of parliamentarians who had an earlier stint as a member of some other party before landing in the one that sent them into parliament. Brendan Nelson was in the Labor Party before he was Liberal. John Gorton was Country Party before he was Liberal. Adam Bandt was Labor before he was Green. And so on. We are all entitled to change our minds, even if switching political parties was once closer to changing football teams – a habit that immediately arouses suspicion in a sports-loving nation.