Two new opinion polls suggest that Sinn Féin remains the most popular party, however the surveys also indicate that Fianna Fáil has made gains.

In a Behaviour and Attitudes survey for the Sunday Times, Sinn Féin is in poll position on 35% - down only marginally on a similar survey in July.

However, Fianna Fáil has increased its standing to 24%, up three points. Fine Gael is on 20%, down one point.

While support for the Green Party has remained static at 5%, the combined support for the government parties is down three points.

Elsewhere, Labour is down two to 4%; the Social Democrats are up one to 3%; People Before Profit are up one to 2%; and Aontu is down one to 0%.

The poll was conducted on an in-home, face-to-face basis over the period 25 August - 6 September.

The results of this opinion poll are based upon a representative sample of 905 eligible Irish voters aged 18 and over.

The margin of error is 3.3 percentage points.

In a Red C poll for the Business Post, Sinn Féin is also placed at 35% - again, down one point.

The poll suggests that Fianna Fáil has made gains - up three points to 17%.

Fine Gael records its worst ever poll result in a Red C/Business Post survey since 2005 - standing at 18%, down one point. It is the third time in a row that the party has lost support.

The Green Party stands at 5%, up one; the Social Democrats are at 4%, no change; and Labour is also on 4%, up one.

People Before Profit are at 3%, down one; Aontú is on 2%, down one; and Independents stand at 12%, no change.

The margin of error in the poll is plus or minus 3%.

The online survey comprised of a random sample of 1004 adults, aged over 18, between 1 and 6 September.