By Stephen Johnson For Daily Mail Australia
Published: 01:13 GMT, 1 March 2019 | Updated: 01:16 GMT, 1 March 2019
Defence Minister Christopher Pyne and another cabinet colleague Steven Ciobo are expected to retire from politics at the next election.
The senior cabinet minister will not contest his Adelaide seat of Sturt, which first won in 1993 when he was 25.
The 51-year-old Liberal Party minister, from the party's moderate faction, would become the fifth cabinet minister to quit at the next election, with Mr Ciobo's possible retirement taking the tally to six.
Defence Minister Christopher Pyne is expected to retire from politics at the next election
The married father-of-four has joined former Liberal Party deputy and foreign minister Julie Bishop in announcing his retirement from Parliament.
His cabinet colleagues Kelly O'Dwyer, Nigel Scullion and