A new Irish Times/Ipsos MRBI poll shows support for Fine Gael and Sinn Féin is up since the last Irish Times poll in September.
Support for the Labour Party, Fianna Fáil, Independents and Others has declined.
The survey was carried out on Monday and Tuesday this week among 1,200 voters in face-to-face interviews.
It suggests support for Fine Gael is at 30%, up two; Fianna Fáil is at 19%, down one, while Labour is at 7%, down one.
Support for Sinn Féin has increased by two to 21% and Independents and Others are down one to 23%.