A final YouGov poll ahead of the sa election reveals a striking realignment: Labor appears set to secure its largest two-party preferred result in South Australian Labor Party history even as its primary vote dips, while One Nation rises to second place and the Liberals risk an unprecedented low. The numbers point to urban consolidation for Labor and a disruptive regional surge for One Nation that could reshape preference flows and seat contests.
Background and context: The headline numbers
The YouGov final poll projects Labor with a 59–41 two-party preferred (2PP) lead, a swing of +4. 4% in Labor’s favour. That 59–41 split would mark the highest-ever 2PP result for the South Australian Labor Party. At the same time, the Liberal Party’s projected primary vote sits at just 19%, a level described in the poll as the party’s worst result to date and the lowest primary showing since the Coalition’s formation.
One Nation is forecast to claim 22% of the primary vote, placing it ahead of the Liberals in South Australia for the first time and matching the party’s best-ever state result. In Adelaide specifically, Labor’s dominance is pronounced: a 64% to 36% 2PP lead over the Liberals is indicated by the poll.
Deep analysis: What lies beneath the numbers
The poll data highlight two concurrent dynamics. First, Labor’s projected 2PP gain comes despite a primary vote that is 2 points lower than at the last state election, suggesting that vote consolidation and preference transfers are boosting Labor’s overall position. Second, One Nation’s ascent appears driven by voter dissatisfaction with established parties; YouGov’s analysis emphasizes disillusionment as a primary motive for One Nation support.
Paul Smith, Director of Public Data, YouGov, said: “Labor is set to secure the largest two-party preferred vote in the South Australian Labor Party’s history, while the Liberals are on track for their worst-ever result, finishing third on just 19%. One Nation’s surge to 22% places them second in the state for the first time, with particularly strong support in regional areas. ”
Voter retention figures in the poll underline the Liberals’ vulnerability: only 55% of those who voted Liberal at the last federal election intend to support the party at the state level. Among that same cohort, 29% now indicate support for One Nation and 10% for Labor. Those shifts reveal the scale of the challenge for the major parties: recovering or persuading a significant slice of former supporters will be decisive for final outcomes.
Sa Election regional stakes: rural surge, multi-candidate contests
Geography emerges as a central fault line. Outside Adelaide, One Nation leads with 27% of the primary vote, ahead of Labor at 24% and the Liberals at 21%. In those areas, the contest turns into a three-way race: a three-candidate preferred split in regional seats is shown as Labor 38%, One Nation 34%, and Liberals 24%. These splits indicate highly competitive seat battles where preference flows will determine winners.
The YouGov assessment notes that over half of One Nation voters feel unrepresented by the mainstream parties. That sentiment is critical because it suggests that winning back those voters will require changes beyond policy mimicry; improved representation and outreach could be necessary to alter trajectories in key regional electorates. In practical terms, Labor’s urban strength may secure a commanding 2PP statewide, while regional volatility could produce unexpected local outcomes.
The poll’s combination of historic 2PP for Labor, a One Nation surge to 22%, and the Liberals’ projected 19% primary vote frames the sa election as both a consolidation of metropolitan support for Labor and a disruptive challenge in rural and regional pockets. The interplay of primary votes and preference flows will be decisive in translating these forecasts into seats.
As polling day approaches, the central question remains: will these numbers hold in voting booths, and how will preference distributions in closely contested regional seats alter the overall map of power in South Australia? The sa election may answer whether metropolitan dominance or regional insurgency ultimately shapes the state’s political landscape.
