Former Vic Premier Napthine quits

DENIS NAPTHINE'S 27 YEARS IN VICTORIAN PARLIAMENT

* 1988: Denis Napthine enters politics after winning the Victorian seat of Portland

* 1999 - 2002: Dr Napthine becomes Opposition Leader after the Kennett government defeat

* 2002: Dr Napthine narrowly retains his seat with a 0.7 per cent margin after the Portland and Warrnambool electorates merged to form South-West Coast

* 2013, March: Premier Ted Baillieu steps down and Dr Napthine becomes Victoria's 47th premier

* 2014, November: ALP wins election and Dr Napthine resigns as Liberal Party leader, says he will see out his term on the back bench

* 2015, August 31: Denis Napthine announces he will quit politics after 27 years