The 2018 South Australian election saw a record vote for minor parties. This was largely due to the campaign by Nick Xenophon and his SA-Best party, polling 14.2% in the House of Assembly, a creditable 18.4% in the 26 seats it contested. The failure of the party to poll as strongly as published polling well out from the election suggested, or to elect a member to the Assembly, saw its campaign labelled a failure by political commentators.
In the end the party was used by voters as a conduit for preferences to the Liberal and Labor Parties. As you would expect for a party viewed by voters as sitting in the political centre, the party’s preferences split evenly, 51.6% to the Liberal Party and 48.4% to labor.
The release of preference flow data by the SA Electoral Commission provides an opportunity to analyse preference flows against party preference recommendations. Several unique features in the conduct of SA House of Assembly elections allows the comparison of preference flows with how-to-votes lodged by candidates and displayed in voting compartments.Read More »Preference Flows at the 2018 South Australian Election and the Influence of How-to-Votes