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WA21 home mackerras pendulum results and analysis parliamenthouseperth

Welcome to election coverage of the Western Australian State election, provided by yours truly at KortJackson.org!

So, what is Kort Jackson's prediction?
Below you will find my prediction, using the chart from the Mackerras pendulum. A seat that is colored in the following colors indicates the seat is predicted by KJ to change hands.

Color Wheel Legend of Parties gaining seats:
ALP Gain LIB Gain NAT Gain GRN Gain IND/OTH Gain


Government Seats
Prediction: Government Returned
ALP gains total of 10 seats
Official Opposition Seats
Prediction: Opposition Defeated
Liberals lose 8 seats, Nationals 2 seats.
Seat Name Percentage Held Seat Name Percentage Held
Joondalup 0.03% Hillarys 0.4%
Kingsley 1.2% Dawesville 0.8%
Murray-Wellington 1.7% Darling Range (b) 3.5%
Jandakot 1.8% Riverton 4.2%
Pilbara 2.2% Scarborough 5.7%
Kalamunda 2.3% Kalgoorlie 6.2%
Bicton 3.6% South Perth 7.2%
Mount Lawley 4.0% Bateman 7.8%
Burns Beach 5.4% Nedlands 8.0%
Albany 5.9% Carine 10.2%
Southern River 7.9% Churchlands 11.7%
Balcatta 8.0% Cottesloe 14.1%
Wanneroo 8.6% Vasse 14.6%
Forrestfield 9.4% CROSSBENCH (Nationals, 6) (c)
Landsdale (a) 9.6% Geraldton (d) 1.3% (LIB vs. ALP)
Bunbury 10.5% North West Central 10.1% (NAT vs. ALP)
Belmont 11.4% Warren-Blackwood 12.8% (NAT vs. ALP)
Swan Hills 12.1% Moore 19.5% (NAT vs. LIB)
Morley 12.3% Central Wheatbelt 22.2% (NAT vs. ALP)
Perth 12.6% Roe 25.9% (NAT vs. LIB)
Midland 12.8%
Kimberley 13.1%
Cockburn 14.3%
Collie Preston 14.7%
Thornlie 15.8%
Baldivis 16.6%
Victoria Park 16.8%
Cannington 17.6%
Willagee 17.7%
Maylands 17.9%
Mandurah 18.0%
West Swan 18.4%
Butler 20.5%
Kwinana 20.7%
Bassendean 21.6%
Fremantle 23.0%
Mirrabooka 23.3%
Rockingham 23.5%
Warnbro 23.7%
Armadale 25.2%


Summary of Prediction
WA Labor Liberal WA Nationals Greens Independents/Other
50 (+10) 5 (-8) 4 (-2) 0 (n/c) 0 (n/c)
Synopsis: While several polls show Labor ahead of the Liberals and Nationals by as much as 68-32, I believe the final number will be a bit less than that. This means that the Liberals and Nationals will still hold on to some seats, but will be reduced to single digits each, and it's possible a upside down situation occurs in which the Nationals may form opposition. The incredibly narrow margin of Zak Kirkup's seat in Dawesville likely makes him a goner. However, such a swing isn't quite unanimous: I believe South Perth will resist the wave and maintain its status as a true blue-ribbon Liberal seat. In any case, I see McGowan and Labor surpassing the 50 seat mark, far going beyond the 41-seat high water mark set just 4 years ago. Coupled with gains in the Legislative Council (not predicted in full here) between Labor and the Greens, and Labor should have a easier time in passing legislation through.

common sense Copyright 2021 Kort Jackson for KortJackson.org, All rights to original content reserved.
Picture of Parliament House, Perth is by nachoman-au and is licensed under a CC BY-SA 3.0 license.