This weekend voters in the Victorian electorate of Dunkley will head to the polls in a crucial federal byelection that will become the first test of how the community views the performance of Anthony Albanese and Peter Dutton in a cost-of-living crisis. Jane Lee speaks to Sarah Basford Canales and Benita Kolovos about what’s at stake for the major parties as we inch closer to an election year You can support the Guardian at theguardian.com/fullstorysupport