NSW Police Minister Troy Grant denies he's quitting state politics because he feared losing his seat at the next election.
The Nationals MP on Thursday conceded he didn't have the energy to continue in the job beyond the March 2019 poll, confirming he will not recontest his seat of Dubbo.
"My family have made enormous sacrifices to allow me to serve this state ... but it's sacrifices to my family that I am no longer willing to make," Mr Grant told reporters.
He entered state parliament in 2011, having previously served as a NSW police officer for 22 years. Three years later, he rose to become leader of the NSW Nationals Party and deputy premier.
But he stood down in 2016 following the Nationals' poor result at the Orange state by-election, which was partly attributed to the-then ban on greyhound racing.
Mr Grant said it was a "tough" time for him and his family but it wasn't the reason he was quitting politics.
"Obviously we tried to do the right thing (but) we got it wrong politically," he said.
"I paid an enormous price (and) my family paid a greater price on that incident."
He also ruled out fears of losing the Dubbo seat, having won more than 60 per cent of the primary vote in the 2015 election.
Regional rivals, the Shooters, Fishers and Farmers Party, are circling the seat, buoyed by the defeat of a Nationals member at the Orange by-election.
"We keep hearing that people in Dubbo are fed up with being taken for granted by Troy Grant and the National Party," Shooters MP Robert Borsak said in a statement.
Reflecting on his time in parliament, Mr Grant admitted the political landscape had "drastically changed" and become a "nastier place" since he started.
"The impact the nastiness has had on my kids is probably the lowlight," he said.
Mr Grant will continue in his role as police minister until March 23 but is unsure what he'll do next.
Premier Gladys Berejiklian said Mr Grant had made an "outstanding" contribution and understood his reasons for quitting.
She dismissed concerns about unrest within the Nationals, despite several members resigning since the last election.
"People need to give this job a million per cent and if they don't feel like they can do that into the future then that's up to them," she said.
"I also welcome the opportunity for new blood."