Members from the Australian Progressives, Reason Party ACT, Sustainable Australia and Liberal Democrats ACT will host a question and answer session at King O'Malley's pub at 6pm on Thursday.

Australian Progressives national president Robert Knight said ACT Labor had no interest in sharing power.

"We see Labor as on the nose, fairly arrogant about where they sit in political leadership in the ACT and I strongly feel the Canberra community would like to see them taken down a peg or two," Mr Knight said.

Voters in the ACT faced a choice between a union, factional-led Labor party or a staunchly conservative, backwards-looking Liberal party, Mr Knight said.

"We need people to know who we are and with limited resources you can't advertise like the big parties," he said.

"This is less about a political alliance and more about working together to raise the profile for minor parties."

Minor parties and independents face an uphill battle in the ACT after the government introduced five-member electorates in 2014.

In 2012, the Assembly had 17 seats up for grabs, with two five-member electorates and one seven-member electorate. The latter meant candidates needed to get a smaller proportion of votes - about 12 per cent - to win a seat, making it comparatively easier for independents and minor parties.

The Assembly was expanded to 25 seats before the 2016 election, and voters now have five five-member electorates. Under the ACT's Hare-Clark voting system, candidates need 16.6 per cent of the vote to win a seat in these electorates.

Mr Knight said it would mean minor parties would have to score 4000 first preference votes.

"It is a big ask and it is part of the reason why we're doing this to raise our profiles," Mr Knight said.

At the time of the rehaul, Greens leader Shane Rattenbury welcomed the expansion of seats but described the changes to electorates as an "electoral stitch up" by Labor and the Liberals.

The same year the Assembly passed laws allowing parties to receive $8 per vote from the electoral commission rather than $2 per vote.

"We have the major parties who are effectively entrenching themselves in the political landscape," Mr Knight said.

"It builds their own war chest to carry out their own campaigns later on down the line."

Mr Knight said minor parties faced other challenges too, such as Australian Electoral Commission audits and registration administration.

"That type of work, it takes a lot of effort as a minor party with limited resources," Mr Knight said.

Former independent MLA Michael Moore said five-member electorates made it more difficult but minor parties had been able to score wins in smaller electorates before.

Mr Moore was voted into the Assembly in 1989 for the now defunct Residents Rally party before leaving the party and sitting as an independent.

He had won the seat, along with another independent, in the then seven-member electorate of Molonglo.

Mr Moore said independents and minor parties helped, in Australian Democrats founder Don Chipp's words, to "keep the bastards honest".

"They can push the major parties to deliver on their promises that they were going to leave on the shelf," Mr Moore said.

He defended the government's changes to allow them to collect $8 a vote from the electoral commission, saying it allowed them to be less reliant on political donations.

Referring to the spate of politicians defecting from minor parties in the federal parliament, Mr Moore said it was a risk voters would take by supporting non-major parties.

Mr Moore said another plus side to minor parties was they were likely to have more people with real life experience.

"One of the frustrations we have with the major parties is - by and large - someone who joins the party becomes a staffer for a member and moves into the party, they take a political path and don't know anything else," he said.