A by-election for the seat of Enfield in the South Australian House of Assembly was held on 9 February 2019. The by-election was triggered by the parliamentary resignation of Labor Party MP and former Deputy Premier John Rau on 17 December 2018. Labor candidate Andrea Michaels retained the seat with an increased margin.
A Cheltenham by-election was held on the same day, as Rau's former leader and Premier, Jay Weatherill, had also resigned from parliament.
Candidates.
The Liberal Party declined to field a candidate for both the Enfield and Cheltenham by-elections.
Result.
! scope="col" colspan="2" style="width: 130px"|Party
! scope="col" style="width: 17em"|Candidate
! scope="col" style="width: 5em"|Votes
! scope="col" style="width: 3.5em"|%
! scope="col" style="width: 3.5em"| ;templatestyles src="Template:Tooltip/styles.css" / ;±%
! colspan="3" style="text-align:right;" | Total formal votes
! colspan="3" style="text-align:right;" | Informal votes
! colspan="3" style="text-align: right; margin-right: 0.5em" scope=row | Turnout
! colspan="6" style="text-align:left;" |Two-candidate-preferred result
References.
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