Nash loses out as Adams brings in his running mate
Labour's loss was Sinn Féin's gain in Louth, with Employment Minister Ged Nash losing his seat as Gerry Adams and his running mate both secured places in the Dáil.
Sinn Féin's Imelda Munster also made history by becoming the first female deputy elected for Louth.
The signs of Labour's defeat could be seen from the first tallies, which had Nash in sixth place in the five-seat constituency.
Party faithfuls hoped he could pick up sufficient transfers to overtake Fine Gael's Peter Fitzpatrick, who acknowledged early on in the count that he was in 'a dog-fight' for the last seat.
The gap increased and it became inevitable that Fine Gael was going to retain Fitzpatrick and Fergus O'Dowd, thanks to effective vote management.
"It is a great shame that the Labour Party is going back into the Dáil in diminished numbers," said Nash.
Sinn Féin's party leader Gerry Adams topped the poll and said that it was "the most successful Sinn Féin campaign" in his lifetime.