South Australia’s political landscape was shaken when Premier Peter Malinauskas announced that both Deputy Premier Susan Close and Treasurer Stephen Mullighan would be stepping down from Cabinet immediately and retiring from Parliament at the upcoming state election in March 2026.
The double departure creates a sudden vacuum at the heart of the government, with the final stretch toward the election now lacking two of its most senior and trusted ministers.
But, Why They’re Leaving
Though the timing has surprised many, both ministers cite personal/family considerations rather than scandal or political tension as their reasons. Ms Close, first elected in 2012 and Deputy Labor Leader for over seven years, spoke of wanting to leave “while still energised” and being drawn by life outside politics, including caring for an aging family.
Mr Mullighan, in office since 2014, emphasised that after decades in senior government, he wishes to spend more time with family and explore other opportunities. Premier Malinauskas said he was “taken aback” and “sad” at their decisions, having tried unsuccessfully to persuade them to remain.
The Political Implications
- Cabinet Reshuffle & Talent Gaps
The departure of two senior ministers so close to an election forces Premier Malinauskas to quickly identify replacements who can match experience, competence, and electoral appeal. There is also pressure on Labor to maintain stability and reassure voters that the government is capable of delivering through to the next term. - Perception of Instability
The Opposition has already seized on these resignations to question the cohesiveness and durability of Malinauskas’ leadership. Criticism is likely to intensify if any gaps in policy delivery occur between now and March. - Electoral Risks
With Close and Mullighan both well-known names in South Australia, their absence may leave exposed electorates or portfolios that could shift the balance. Voter confidence could hinge on how convincingly Labor fills these roles.
What This Means for SA Labor’s Election Strategy
Premier Malinauskas will need to balance continuity with fresh faces. The incoming ministers must not only manage existing portfolios but also be credible from Day One. The party must guard against messaging that sounds like retreat or internal disarray.
Labor will likely lean on policy successes so far—economic performance, environment, infrastructure—to offset the shock. Public communication will be crucial; projecting unity and personal sacrifice may help mitigate voter concern about the departures.
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