One Nation experienced a significant increase in voter support during the March 2026 South Australian state election [1].

This shift indicates a growing level of voter disaffection with major political parties and could alter the balance of power in future federal contests. While the Australian Labor Party retains control of the government, the rise of Pauline Hanson's party signals a tectonic shift in the political landscape [2].

One Nation captured 27% of the primary vote in South Australia [3], a sharp increase from the five percent it received at the previous election [3]. Other reports indicate the party received more than a quarter of all votes in the state [4]. Despite this surge, the Labor Party is projected to win approximately 33 of the 47 seats in the South Australian House of Assembly [5].

"How did we end up in a scenario where there is this giant surge of votes, now more than a quarter of all votes, that goes to One Nation? And how does this not affect the Prime Minister?" Paul Murray said in a Sky News Australia broadcast [4].

The momentum appears to extend beyond state borders. National polls show One Nation currently holds roughly 22% support [6]. This popularity has created new opportunities for the party in federal politics, particularly in the electorate of Farrer.

Strategic preference deals may further amplify the party's influence. Dr. Jane Smith said that Coalition preferences could deliver a One Nation victory in the Farrer by-election [7]. Such a result would further cement the influence of Pauline Hanson on the national stage [7].

The surge is attributed to a combination of voter frustration and strategic alignment within the preference system, a mechanism that can elevate minor parties even when major parties hold the majority of primary votes [2].

“One Nation captured 27% of the primary vote in South Australia, up from just five percent at the previous election.”

The divergence between One Nation's primary vote surge and Labor's continued seat dominance suggests a fragmented electorate. While Labor maintains governing power, the rise of a populist third party creates a volatile environment where preference flows—rather than raw primary support—determine the outcome of key seats. This trend may force major parties to shift their policy platforms to recapture disillusioned voters.