Support for Labour has halved since the election began, according to the first opinion poll of the weekend.

The Behaviour & Attitudes poll commissioned by the Sunday Times puts the junior coalition partner on just 4%.

The poll of 1,026 voters commissioned by The Sunday Times had been due to be published tomorrow, but it was leaked online in advance, and details have been published in full this morning by its sister paper, the Ireland edition of the Times.

Fine Gael rises two points to 30%; Fianna Fáil enjoys the same increase, up 2% to 22%. Sinn Féin however falls 2 points to 15%.

Our political correspondent Gavan Reilly reports: