Victorian opposition leader John Pesutto believes his leadership is intact and the Liberals can win the next election despite turning his back on a commitment to oust MP Moira Deeming from the party after she attended an anti-trans rights rally that was gate-crashed by neo-Nazis.

Mr Pesutto on Monday said Ms Deeming would be handed a nine-month suspension and be stripped of her role as upper house whip following a two-hour meeting.