Deputy Paul Murphy said the radical alliance has agreed the move as no party will win next week’s vote and the manoeuvre will give it an opportunity to highlight its hard-left policies.
Following discussions with other AAA/PBP TDs, Mr Murphy said the six- seat Dáil group will not be voting for Kenny, Martin or Adams.
Instead, he said the alliance will meet early next week to decide on a nominal person to be put forward as a taoiseach nominee to highlight a “clear left position” exists in the Dáil.
“This isn’t an opportunity to get rid of Fine Gael or Fianna Fáil because nobody will win the vote, so there is no point in voting for Adams.
“We want to show there is a clear left position and that is more left than Sinn Féin,” he said.
The Dublin South West TD said the the alliance was not concerned about who will be its nominee “as it doesn’t matter who the person is”.
The situation means next week’s vote is now even more skewed than before, with Fine Gael and Labour currently due to nominate Enda Kenny, Fianna Fáil putting forward Micheál Martin, Sinn Féin to put forward Gerry Adams and AAA-PBP to present an as yet unknown candidate.
The AAA-PBP decision is a serious setback to Sinn Féin which had hoped to depend on left-wing support to boost its 23 TDs.
Meanwhile, Mr Adams yesterday left the door marginally open for supporting a minority Fine Gael or Fianna Fáil government.
“It is very clear that water charges have to go, family home tax has to go, public services need to be built.
“But we haven’t heard from any of these other parties.”
“Let’s wait to see,” said Mr Adams, “they haven’t put anything on the table.”