Political theory would suggest if a party has been in power for almost two decades it would be lethargic at a minimum or corrupt at the extreme end of the spectrum.

But it appears ACT voters will give the Labor team led by Chief Minister Andrew Barr another shot.

Mr Barr says the fact Labor has been in minority government for all but one term of the past two decades makes it different to other states and territories.

"Plus we've put in place in the last four years the ACT's integrity commission and we have a very robust system of independent planning and development assessments in the territory ... which has been problematic in larger states for long-term governments," Mr Barr told AAP in an interview on Monday.

As well, the ACT has campaign spending caps and public funding of election campaigns, which remove the over-reliance on donations seen in states and federally.

Mr Barr is the third chief minister in that period and eight of the 12 current Labor members were first elected in 2016.

He said having a written and publicly available agreement with the Greens - unlike the secret coalition agreement between the federal Liberals and Nationals - provided transparency and gave voters a clear sense of policy priorities.

At times, Labor has even struck deals with the Liberals - led by Alistair Coe - to pass laws and resolutions.

The ACT's proportional electoral system - based on five members in each of five seats - virtually guarantees minority-held government.

ACT Labor plans a new tranche of tax reform if re-elected, taking it further down the 20-year path of abolishing stamp duty, while ensuring the government is earning enough revenue to cope with Canberra's growth.

A big hit to national GST revenue - the single largest revenue source for the ACT - due to the coronavirus pandemic will hinder whoever is in power after Saturday's election.

The ACT was struck by the double-whammy of a reduction in its share of the GST pool and the pool itself being smaller.

"We are running budget deficits at the moment," Mr Barr said.

"There are some infrastructure projects we've been able to bring forward as stimulus measures.

"Others that would be in the category of 'nice to have' other than 'must haves' have been pushed into the mid part of this decade."

Territory rights, especially over the ability to enact right-to-die legislation, will also be on Mr Barr's agenda if re-elected.

"We think the momentum is building across the country," he said.

"Once you get it to a point where half the states or more have passed legislation in this area then it is just going to be untenable for the commonwealth parliament to say no to the two self-governing territories."

As well, Labor plans to deliver one of the biggest renewable battery storage systems in Australia, delivering at least 250 megawatts of storage, which is expected to lower electricity prices, stabilise the power grid and provide revenue.

There are 137 candidates vying for the 25 seats.

Heading into the election, the assembly has 12 Labor, 11 Liberal and two Greens members.

Australian Associated Press