Fine Gael's Eoin Murphy has said he is confident their European candidate Brian Hayes can still win a seat.
That is despite an exit poll showing numbers for the party being at 14% in Dublin.
Sinn Fein's Lynn Boylan is expected to take a seat with support for the party at 24% in the same poll.
Full RTÉ poll results for the constituency are:
Lynn Boylan (Sinn Féin): 24%
Brian Hayes (Fine Gael): 14%
Eamon Ryan (Green Party): 14%
Mary Fitzpatrick (Fianna Fáil): 12%
Nessa Childers (Independent): 11%
Emer Costello (Labour): 8%
Paul Murphy (Socialist Party): 7%
Brid Smith (People Before Profit Alliance): 6%
Thomas Darcy (Direct Democracy Ireland): 1%
Jim Tallon (Independent): 1%
Raymond Patrick Whitehead (Direct Democracy Ireland): 1%