Fianna Fáil are down five percentage points to 10% while the Greens are up one point to 6%, according to a Business Post-Red C Research poll.
Fine Gael has seen no change and remains on top at 35%.
Sinn Féin remains the second most favourable party, at 27%.
Here are the overall results, with regard to any changes since May’s poll:
Fine Gael, 35% (no change)
Sinn Féin, 27% (no change)
Fianna Fáil, 10% (down 5)
Independent, 10% (up 3)
Green Party, 6% (up 1)
Labour Party, 3% (no change)
Social Democrats, 4% (no change)
Solidarity/PBP, 2% (no change)
Aontú, 2% (up 1)
Other, 1% (up 1)