Over 3,000 SF members are expected to attend the conference in the RDS in Dublin with less than 1,000 voting on a motion allowing the party leadership to endorse republican involvement with the PSNI.

At Tuesday's meeting, Bertie Ahern and Tony Blair will have to decide on the viability of holding assembly elections in March. The two leaders will be monitoring the response of the DUP to the Sinn Féin decision.