The Lisbon Treaty will strengthen individual rights and those of Irish citizens at home, Labour Leader Eamon Gilmore has said.

Speaking at the launch of the party's campaign for a Yes vote, Mr Gilmore said the treaty provided for greater openness and accountability to European decision-making.

It provided, for the first time, a clear legal basis for European laws to protect public services, he added.

Mr Gilmore cautioned that support for the treaty should not be taken for granted.

Labour will spend €200,000 on a nationwide campaign including leaflets and outdoor billboards.

Meanwhile Sinn Féin has said the No campaign in the Lisbon Treaty referendum is not a lost cause.

MEP Mary Lou McDonald said Sinn Féin will intensify its campaign against the Treaty over the coming weeks.

She was responding to today's Red C poll in The Sunday Business Post, showing a 10% lead for supporters of the Treaty.

The poll reveals a shift back to the Yes side in the past two weeks, with support up three points at 38%.

Support for the No camp is at 28%, down three points.

Just over one third of voters remain undecided. 

A fortnight ago, the Yes lead was 4%, but this latest poll puts it at 10%.

Yesterday, the Taoiseach, Brian Cowen, said that securing a Yes vote is the priority for his Government.