Peter Dutton, Leader of the Opposition from the Hard Right wing of the Australian Liberal Party lost the federal election (current count is 41 seats to 81) and his own seat in Parliament 57%-43%.
He is the first leader of the opposition to ever lose their own seat.
https://www.abc.net.au/news/2025-05-03/peter-dutton-losing-dickson-coalition-leadership/105247916
rookie mistake, always know where your seat is