Micheál Martin and Fianna Fáil are now more popular than Leo Varadkar and Fine Gael respectively.
The latest Sunday Times Behaviour & Attitudes poll shows the Fianna Fáil leader holds a strong 11 point lead over the Taoiseach when it comes to public satisfaction with party leaders.
54% of those questioned between the 29th June and 11th of July were satisfied with Micheál Martin - two points up on the last poll.
Leo Vardakar secured 43% (an improvement over Enda Kenny's 37%), as did Sinn Féin leader Gerry Adams (up six points).
Labour's Brendan Howlin was just one point behind on 42% - a five point improvement on the last poll.
In terms of party support, Fianna Fáil (30%) is just one point ahead of Fine Gael (29%).
There have been few changes elsewhere - both Sinn Féin and Labour remain unchanged at 18% and 5% respectively.
The Independent Alliance and Green Party are both down one point compared to the last poll, while Solidarity / People Before Profit are up one - all results well within the 3.3% margin of error.
