"Safe Seats" Falling Is Nothing New

The Australia Institute and its director have been putting out a lot of its usual Hung Parliament Club type stuff about how "power sharing parliaments" are the new normal, how there are no safe seats anymore and so on.  They've been trying to claim that the rise of teals and the decline of major parties means the traditional 2PP swing-based model is more or less dead, although I actually nipped that view in the bud days after the election.  If major party vote shares keep declining we may sooner or later get to a point where 2PP swing-based models cease to be of much use, but 2022 wasn't even close.  See also here, where I point out that the Coalition didn't actually get a raw deal in the "non-classic" seats and what actually caused it to lose so heavily in 2022 was that Labor beat it on 2PP and thumped it on 2PP distribution in the classic Labor vs Coalition seats.

The "power sharing parliaments" analysis misleadingly lumps stable Coalition majority governments and non-majority upper houses in with the sort of thing we saw in 2010.  They're totally different: a true minority parliament involves a government that must make a fresh negotiation for supply and confidence and that continually depends on the crossbench for those things.  (Yes the Coalition has its own internal arrangement but it's a long time since there's been the slightest doubt that the Nationals or their precursors would continue to support a Coalition government).  When there is a "hung Senate" the passing of legislation is often at stake, but except in the most extreme cases supply is not, confidence is not, the composition of the Executive is not.  Hung Senates aren't generally perceived as causing potential stability issues, and the ability of governments to send them to double dissolutions if they keep blocking things can make it easier to browbeat them than it is to browbeat minority Reps crossbenchers.  The most successful governments use Senate obstruction, where it happens, to extend their own lifespans, by being able to signal to their base without having to put up with the consequences of policy their base likes being passed unamended.  A government majority in both houses can easily go to a government's head - cf Howard 2005-7 and Workchoices.