Australia's former Deputy Prime Minister Barnaby Joyce has won back his seat, just a month after being forced to resign over a dual citizenship row. He quit when it was revealed he held dual Australian-New Zealand citizenship – disqualifying him from parliament. But he has since renounced his New Zealand citizenship, and today won the by-election in New South Wales. <br/><br/>The dual citizenship crisis has cost eight MPs, including Mr Joyce, their seats and the government its majority.<br/>Counting is still under way when Australia's national broadcaster ABC declared that Mr Joyce had "easily won" the by-election. It was called to fill the seat Mr Joyce left vacant when the High Court ruled that his dual citizenship made him ineligible.