Federal Liberal MP Russell Broadbent has quit the party to sit on the crossbench after he was dumped from preselection on the weekend.
The MP for the Victorian seat of Monash, who was first elected in 1990, told coalition colleagues in Canberra on Tuesday he would see out the rest of his term as an independent.
Mr Broadbent will be replaced as Liberal candidate for Monash by community leader Mary Aldred, following a preselection ballot on Sunday.
He is due to issue a statement on Tuesday morning.