THE BASICS:

* ACT Legislative Assembly has 25 members

* The state of the chamber is 12 Labor, 11 Liberal and two Greens members

* Five electorates will choose five members each

* The higher quota makes it harder for minor parties and independents to get elected

* ACT voters have only once elected a majority government

* Labor or the Liberals are likely to have to rely on crossbench support to take power

* More than 300,000 Canberrans are enrolled to vote

* 137 candidates have nominated

THE ISSUES:

TRANSPORT

* With Labor having delivered light rail to the city's north, there is debate around the second stage to the south.

* The Liberals have sent mixed signals over the second stage, arguing the business case as well as the design and construction plans need to be more transparent. They previously argued against the project.

HEALTH

* Labor's $500 million plan to upgrade the Canberra Hospital is due to be completed in 2024.

* The Liberals want a more ambitious expansion plan, with the aim of halving elective surgery waiting times and improving emergency treatment.

RATES

* The Liberals want the election to be a referendum on the cost of living, with a residential rate freeze over four years and a commercial rate freeze over two years.

* Labor will cap residential and commercial rate rises at 3.75 per cent for five years from 2021/2022 as it gradually abolishes stamp duty. Rates have been frozen during the pandemic and $150 rebates offered to households.

ENVIRONMENT

* Labor wants to build a network of batteries (the biggest in the nation) to store renewable energy, stabilise the grid and put energy back into the grid, earning revenue for the territory. The past term has seen the ACT move to 100 per cent renewable electricity.

* The Liberals want to plant one million trees over a decade.

TWO-PARTY GOVERNMENT

* Labor has come to terms with the fact that the proportional electoral system virtually guarantees minority government, likely with the Greens.

* The Liberals are aiming for majority government and would struggle to negotiate a minority government if the Greens retain seats. However, if conservative independents were to succeed, it would be a different story.

Australian Associated Press