Primary support for Labor is 35% (down 5% from the 2022 State Election), well ahead of One Nation on 28% (up 25.4%), and more than double the Opposition L-NP on 16.5% (down 19.7%). Support for the Greens is 11% (up 1.9%), while 3% (down 1.8%) support Other Parties, and 6.5% (down 0.8%) support Independents according to the special SMS Roy Morgan survey conducted from February 19-23, 2026, with a representative South Australia-wide cross-section of 2,172 electors.
Despite losing primary support, the ALP’s two-party preferred support has increased since 2022 and is far ahead of the L-NP: ALP 61% (up 6.4% points from the 2022 State Election) cf. L-NP 39% (down 6.4% points). Labor also has a large two-party preferred lead over One Nation: ALP 59% cf. One Nation 41%.
The closest two-party preferred result – which is relevant for likely contests between the two parties in rural and regional seats – is between One Nation (52.5%) and the L-NP (47.5%).
These preference flows are based on how people say they will vote, as final preference "deals" between the major parties have not yet been revealed more than three weeks before the election on Saturday March 21.
The Roy Morgan Poll shows that South Australians are set to re-elect Premier Peter Malinauskas and the Labor Government with an increased majority at next month’s State Election.
