A new opinion poll shows support for Sinn Féin has surged to 35%.

This is 10 points higher than its general election result in the first opinion poll held since the vote.

The survey was conducted by Behaviour & Attitudes for The Sunday Times.

Fine Gael is down almost three points to 18%, Fianna Fáil is down two to 20% and The Green Party is down one to 6%.

While The Labour Party is down one to 3%, Solidarity/People Before Profit is unchanged on 3% and the Social Democrats are down one on 1%.

Sinn Féin's support seems mirrored in party leader satisfaction: Mary Lou McDonald is up 13 points to 53%.

Party leaders Micheal Martin, Leo Varadkar and Mary Lou McDonald are pictured ahead of a televised leaders' debate of the Election 2020 campaign | Image: Leah Farrell / RollingNews.ie

This is 22 points ahead of her nearest rival, Fianna Fáil leader Michael Martin, who is on 31% - a 15 point drop.

The acting Taoiseach Leo Varadkar has seen his satisfaction rating down eight points to 27%.

Overall government satisfaction has also dropped nine points to 21%.

This latest poll also suggests that the percentage of undecided voters sits at just 13% - the lowest level since this series of polls began in 2011.

The results are likely to put more pressure on Fianna Fáil and Fine Gael to negotiate a government as they prepare to meet this coming week to discuss policies.

The alternative appears to be a second election, in which both parties would lose further Dáil seats.