Key events since the 2015 NSW election

WHAT'S HAPPENED SINCE THE 2015 NSW ELECTION?

* Disgraced former NSW Labor MP Eddie Obeid was in 2016 sentenced to a minimum three years in jail for wilful misconduct in public office.

* Former NSW Labor MP Ian Macdonald was in 2017 jailed for a minimum seven years after being found guilty of two counts of wilful misconduct in public office. In February 2018 his conviction was quashed and he will face a retrial.

* Then-NSW premier Mike Baird announced a ban on greyhound racing in August 2016, which he backflipped on some two months later.

* A new emergency services tax to replace the emergency services levy on household insurance policies was announced in 2015. The government backed down on the plan in 2017.

* Baird quit politics in January 2017 citing family health challenges and after copping criticism over his controversial council mergers, lock-out laws and the greyhounds backflip.

* Then-treasurer Gladys Berejiklian stepped up to the top job and was officially sworn in on January 23 in 2017.

* The NSW government in late-2015 planned to merge 35 local councils but by mid-2017 abandoned plans to forcibly merge regional councils and 14 Sydney councils.

* Ms Berejiklian's decision in late 2017 to knock down and rebuild ANZ and Allianz stadiums at a cost of $2.5 billion caused an immediate backlash. In early 2018 she backed down and chose to refurbish ANZ stadium instead.

* The Sydney light rail project has been bungled with several cost blowouts, ongoing delays, a protracted legal battle and a class action.

* State budgets focused on getting first homeowners into the market with stamp duty concessions and foreign investors hit with extra property surcharges.

* Australia's competition watchdog is challenging a deal made by the NSW government when it privatised Port Botany and Port Kembla claiming it's anti-competitive and illegal.

* Labor leader Luke Foley resigned as leader in November 2018 after an ABC journalist claimed he groped her during a parliamentary staff Christmas party.

* Foley's deputy, Michael Daley, elected as the new leader.

* The NSW corruption watchdog is investigating donations received by the Labor party at a fundraising dinner which were reportedly at the centre of an ICAC raid on Labor NSW's head office in December 2018.

* The premier refused to buckle to pressure to implement pill testing after five suspected drug overdose deaths at NSW festivals over four months. She imposed a new licensing scheme instead.