The latest opinion poll shows Fine Gael and Fianna Fáil still command the support of almost half of voters between them.
The poll, which was carried out by Red C for the Sunday Business Post, indicates a drop in support for the Anti Austerity Alliance/People Before Profit and also for the Independent Alliance, partners in Government with Fine Gael.
It shows gains for Sinn Féin and other Independents on the opposition benches.
The poll was conducted nationwide among 1,000 voters over the last week.
Little has changed between the two main parties in this poll, although support for Fianna Fáil has fallen marginally.
The Independent Alliance, which has been involved in public spats with their Fine Gael colleagues in Government over neutrality and judicial appointments, drops 2 points.
Sinn Féin gained 3 points, a move that might be attributed to controversy over the party's Neutrality Bill in the Dáil, while the AAA/PBP drop back from a 3 point gain in the last comparable poll.
Compared with the last similar poll in October it shows:
Fine Gael 25% (no change)
Fianna Fáil 24% (-2)
Sinn Féin 16 % (+3)
Independents 12% (+2)
AAA-PBP 5% (-4)
Independent Alliance 4% (-2)
Labour 5% (no change)
Social Democrats 4% (+1)
Green Party 3% (no change)
And Others including Renua 1% (+1).