ACT Chief Minister Andrew Barr says another hung parliament is likely as Canberrans take to the polls to decide whether his government returns to office.
But the Liberal opposition says there's a clear mood for change and residents are fed up with 15 years under Labor.
Voters in the territory have hit the ballot boxes in what's been considered a tightly-fought contest between Mr Barr and Opposition Leader Jeremy Hanson who are leading their parties to an election for the first time.
Residents are being asked to choose five MLAs in five electorates, with the territory's Legislative Assembly expanding from 17 members to 25.
Much of the campaign has focused on Labor's plan to build light rail, starting with a link from Gungahlin to the city.
The Liberals have pledged to tear up the contracts and expand the city's bus network.
Mr Barr says the election is a choice for light rail and claims the federal government is not impressed with the Liberal position.
"Privately they're even more scathing of the Canberra Liberals' position on this," he told reporters on Saturday.
However, Mr Hanson says long-time Labor voters are flocking to the opposition - many for the first time.
"They understand that 19 years of later would just be too long," he said.
"There is this sense of tiredness and smell about the existing Labor-Greens coalition government."
ACT voters have only elected one majority government in 27 years of self-government and it's expected whoever takes power will need the support of minor party and independent MLAs.
Greens MLA Shane Rattenbury was the only crossbencher elected in 2012 and is likely to keep his seat but the higher quota needed this time may prevent others joining him.
Mr Barr has conceded the most likely result is another hung parliament.
Punters are tipping Labor will retain government but the Liberals' odds have shortened over the past week.
