Nearly three quarters of voters think Brian Cowen's credibility as leader of the country has been damaged by his now infamous radio interview.
A new opinion poll for TV3 News shows Labour is the most popular party in the country with further drops in support for Fianna Fáil and Fine Gael.
The Millward Brown/Lansdowne Poll found 71% of people think the Taoiseach's credibility is damaged by the radio interview.
Up to 56% of those polled don't think the controversy really matters, while just 10% say it will change their voting intention.
Some 52% of voters don't think Brian Cowen should continue as Fianna Fáil leader and the favoured successor is Brian Lenihan on 46% with Micheál Martin way back on 15%.
Satisfaction with the Government is down 2% to 11%.
Fianna Fáil drops 5% to 22%, Fine Gael are down 4% to 30%, Labour go up 16% to 35%, while Sinn Féin support is halved to 4%.
Personal satisfaction ratings see Mr Cowen down 4% to 18%, Enda Kenny fall 2% to 24% and Eamon Gilmore up 4% to 58%.
Mr Gilmore has nearly double the support to be the next Taoiseach than Mr Kenny and more than three times that of Mr Cowen.