Katharine Murphy talks to Dr Kerryn Phelps, a former Australian Medical Association president and prominent same-sex marriage campaigner, about her independent candidacy in the Wentworth byelection. Phelps talks about the sentiment in the electorate for strong action on climate and energy, as well as the need to help asylum seekers on Nauru and Manus Island. But will her surprise decision to direct preferences to the Liberal party alienate progressive voters?

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