There has been an increase in support for both Sinn Féin and Fine Gael, the latest RED C opinion poll for the Business Post suggests.
The survey of voters also indicates a drop in support for Fianna Fáil.
The online poll of 1,055 adults over a week up to last Wednesday puts Sinn Féin on 24% support, which is an increase of 2 percentage points.
Fianna Fáil, on the other hand, has dropped 2 points and now stands at 20%.
Meanwhile, Fine Gael is on 19% - up 2 points.
The Social Democrats are unchanged at 7%.
Aontú is up 1 point at 5%.
Independent Ireland is also up 1 point to 5%.
Labour is down 1 point to 3%.
The Green Party is unchanged at 3%.
People Before Profit-Solidarity is also unchanged at 3%.
Independents are down 3 points to 10%.
Other parties stand at 1%.
The margin of error is plus or minus 3%.
