A new opinion poll suggests that Sinn Féin has increased its support in the last month.

The Sunday Times/Behaviour and Attitudes survey indicates that Sinn Féin retains the most support at 34%, which is up four points since the last comparable poll in mid-May.

Fine Gael is down four points on 24%, while Fianna Fáil dropped two points to stand at 20%.

The Green Party is down one to 4% while the Social Democrats are also at 4% which is a rise of two points for that party.

Independents and others are up one point to 9%.

Labour are on 3% support with Solidarity-PBP and Aontú all on 1%.

The poll was conducted over the period 27 May to 8 June, with a representative sample of 909 eligible voters.

The margin of error is plus or minus 3.3%.

State of the parties:

Sinn Fein 34 (+4)

Fine Gael 24 (-4)

Fianna Fail 20 (- 2)

Independent/others 9 (+1)

Greens 4 (-1)

Social Democrats 4(+2)

Labour 3 (-1)

Solidarity/PBP 1 (NC)

Aontú 1 (+1)