While both Fine Gael and Fianna Fáil have seen a drop in popularity, Sinn Féin is up by 4 points.
Sinn Féin has taken a significant 10 point lead over Fine Gael, also eclipsing Fianna Fáil by 14 points, the latest political opinion poll has revealed.
The party, led by Mary Lou McDonald is up by four points to 34%, meanwhile, Tánaiste Leo Varadkar's party has dropped four points to 24% and Fianna Fáil is down two points to 20%.
The Green Party is also down one point to 4% and independent candidates are up a point to 9%.
The Sunday Times Behaviour and Attitudes poll also reported that the Social Democrats are up two points to 4%, Labour is down one to 3% and Aontú is up by one point to 1%.
People Before Profit has remained unchanged at 1%.
The poll also found one-in-five voters or 750,000 people are still undecided about how they will vote in the next general election.
The survey was taken of 909 Irish voters who were questioned at their homes between 27 May and 8 June.
According to the Sunday Times Behaviour and Attitudes poll from both this month and
last month, Sinn Féin is currently still the most popular political party in Ireland.
While the party briefly saw their numbers take a dip last month, they have once again risen in the latest survey.
