The Western Australian state redistribution has been finalised, leaving undisturbed the basic scheme from the draft proposal in which the regional seats of Moore and North West Central are merged into Mid-West and a new seat of Oakford is created on Perth’s south-eastern fringe. A geospatial file has not yet been provided, so the analysis below is based on eyeballing the published maps and reports, leaving open the possibility I may have missed a few things.
The main change from the draft is that the commissioners have thought better of their plan to turn the coastal northern suburbs seats of Carine and Hillarys into elongated north-south electorates of Hillarys and Padbury, the former covering the coast and the latter the area further inland. I calculated that the proposed Padbury had a Labor margin of 12.9% while the revised Hillarys had 9.6%, whereas now I get 18.9% for Hillarys (19.0% at the election) and 4.0% for Carine (2.5%).
The West Australian recently reported that Caitlin Collins, Labor’s member for Hillarys, was being tipped for Padbury – presumably she will now be more than happy to stay put. It was also reported in The West that Padbury was of interest to Liam Staltari, who was “viewed as a rising star within the Liberal Party” and had recently moved to Duncraig – now at the heart of the highly tempting prospect of Carine.
Two Liberals were said to be eyeing Hillarys as proposed by the draft boundaries: Tony Krsticevic, who held Carine before 2021 and will surely now wish to do so again, and Scott Edwardes, son of party powerbrokers Colin and Cheryl Edwardes and candidate in 2021 for Kingsley, the seat formerly held by his mother. Krsticevic has been linked with the “Clan” faction, while Edwardes is part of a northern suburbs bloc that includes his parents and upper house aspirant Simon Ehrenfeld.
Other changes from the draft include the reversal of alterations to Balcatta, a marginal seat in normal circumstances, that would have reduced the margin from 25.8% to 24.5%. Balcatta was to gain part of Gwelup from Scarborough and lose part of Westminster to Morley. To balance this revision, Scarborough no longer stands to gain a part of Scarborough and Doubleview from Churchlands – I now have the Labor margin there at 9.3%, hardly changed from 9.4% in the draft, but down from the actual Labor margin of 10.4%. Churchlands will in turn no longer gain part of City Beach from Cottesloe, boosting the Labor margin to 1.6% from 0.8% at the election and 0.1% in the draft. Cottesloe, one of two seats won by the Liberals, will in turn not gain part of Floreat from Nedlands, and thus emerge unchanged.
Further afield, Albany will gain all of the Shire of Plantagenet, which is currently in Warren-Blackwood but stood to be divided between Albany and Roe. Warren-Blackwood will surely return to the conservative fold at the next election come what may, but a further addition of rural territory to Albany is unhelpful for Labor in a seat they have held against the odds since 2001. Labor won the seat by 13.7% at the election, which I had coming down to 11.3% on the draft boundaries, and now to 10.8%.
Similarly, Geraldton will now gain Kalbarri and the rest of the northern end of the Shire of Northampton, which the draft had in Mid-West. Labor won the seat by 11.7% at the election, which I had down to 10.0% on the draft boundaries and 9.2% on the final ones. The Shire of Victoria Plains will be entirely within Central Wheatbelt and not split between it and Mid-West as proposed in the draft, which is unlikely to factor into anyone’s calculations. Last and probably least, the commissioners have thought better of renaming Swan Hills as Walyunga.
My two-party preferred estimates of the final boundaries are as follows:
UPDATE: My full final accounting of the new party votes shares and margins can be found here. I land within 0.3% of Antony Green’s two-party preferred estimates in 53 of 59 seats, the biggest imbalance being Kalgoorlie with 0.8%. Ben Raue has two-party and primary vote estimates at The Tally Room.