People Before Profit-Solidarity has said that it is the only party offering a clear alternative to the current Government by ruling out going into coalition with Fianna Fáil or Fine Gael.
The party's annual conference today also heard that Sinn Féin had disappointed lots of working-class communities by moving to the right in leaning into anti-refugee sentiment.
Dún Laoghaire TD Richard Boyd-Barrett said the party will campaign on a platform of refusing to form a coalition with either Fianna Fáil or Fine Gael.
"When the election takes off, you will see a new momentum and we will certainly be arguing that if people want an alternative, it needs to be a clear alternative that rules out going into coalition with Fianna Fáil and Fine Gael," he said.
He added that he believed it was a mistake by Sinn Féin and other left parties not to rule out Fianna Fáil and Fine Gael.
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Solidarity Councillor Ruth Coppinger said the biggest issue in her area of Dublin West was housing.
"The failure of the Government to tackle the housing crisis is giving oxygen to racists and the far right and we are paying the price for that now in them getting their teeth into working class communities to an extent, but we have to challenge that."
Ms Coppinger is aiming to retake the seat she lost in 2020.
She took aim at Sinn Féin saying it had disappointed a lot of working class communities.
"It's clear that Sinn Féin has moved to the right in recent years. It has leaned into some of the anti-refugee sentiment with their proposals on Ukrainians.
"We have to question and challenge Sinn Féin, they could have done so much more. They could have used their 30-something TDs to be part of major struggles on Gaza, housing and Palestine."
Others in the party criticised the recent Budget.
Councillor Hazel de Nortúin said the once-off payments would not go very far.
"People are seeing through it, I don't think it has got the bounce. I am more concerned about the lack of funding for domestic violence, Gaeilge and how more funding has gone into the greyhound industry."
Dublin South-West TD Paul Murphy said the view from canvassing was that people believed the "few euro" would be overtaken by cost-of-living increases.
"Why didn't you do something more transformative in terms of building public childcare or really taking a step forward in health service? Or setting up a State constructive company to build social and affordable housing," he said.
