The Labor Party is set for a landslide victory at this weekend’s South Australian election. Yet despite its forgone result, the election is set to dominate national political debate in its aftermath. Not because of who will win, but rather over who will finish second.
The Labor government of Peter Malinauskas was first elected in 2022, winning a sweeping victory that added Steven Marshall to the list of his state’s one term Liberal Premiers.
Since coming to office, Malinauskas has dominated opinion polls and his Liberal opponents. Steven Marshall retired the leadership after the 2022 election. David Spiers and Vincent Tarzia have come and gone. Now it is Ashton Hurn, just 35, female and a first term MP, who has been left with under than 100 days to restore her party’s fortunes.
Hurn has taken over a Liberal opposition that has trailed Labor in the polls for four years. Labor has gained the seats of Hurn’s predecessors Steven Marshall and David Spiers at by-elections. It is less than a year since the Federal election when Labor swept every seat in metropolitan Adelaide.
And the federal situation has worsened since. Nationally the Coalition is stalked by the spectre of Pauline Hanson’s One Nation. Hanson’s party has undergone a massive revival as cost-of-living pressure has grown and the Coalition has descended into fratricide and internal division.
National polling has shown One Nation matching and even outpolling the Coalition. As the first quarter of 2026 has passed, even federal Labor’s primary vote has begun to slip with the rise One Nation.
South Australian polls have not shown a similar decline in Labor support, but they have replicated the shift from the Liberal Party to One Nation. With final polls agreeing that One Nation is now polling second, the question is – who will finish second on election day?
To date all we have is opinion polls. Are the polls measuring disenchantment or voting intention? Saturday’s South Australian election may finally tell us whether One Nation’s rise is real.
So dominant is state Labor that perhaps the election is not a true test of the national mood. But it is a measure of whether the polls are right.
If One Nation finishes second in the vote, and Liberal support follows the polls and drops below 20%, then the feverish spiral of recent Coalition politics may worsen.
Are voters going to turn out and vote for One Nation in numbers not seen since One Nation’s first electoral test at the 1998 Queensland election? And will this turn into seats?
Labor is expected to dominate Adelaide, but will we see One Nation poll strongly in the city’s north where Labor’s safest seats lie. Thirty three of the state’s 47 seats are in the metropolitan area. For One Nation to poll above 20% state-wide, it must poll strongly in Adelaide even if the result sees more second places than seat wins.
The collapse in Liberal support will see the party lose further seats to Labor with another metropolitan wipe-out possible. The One Nation threat will be greatest in rural seats where the Liberal Party is already challenged by Independents. Will One Nation further damage Liberal prospects?
And if One Nation matches its polling numbers, can its vote be turned into seats?Read More »2026 South Australian Election Preview