A full recount of votes in the Ireland South European constituency is set to go ahead next Tuesday.
The announcement followed a recheck of votes, which was completed earlier on Thursday.
One extra vote was found for Sinn Féin's Liadh Ni Riada.
Ms Ní Riada requested the recount as she was poised to miss out on the final seat to the Green Party's Grace O'Sullivan by just over 300 votes.
A full recount could take 28 days, and could cost up to €1 million.
— Stephen Murphy (@StephenMNews) May 30, 2019
Sinn Féin TD for Cork, Jonathan O'Brien, thinks the cost of the recount is worth it.
He said: "I don't put any price on democracy - this is literally what we're doing.
"People went out and cast their votes. We have a right, they have a right, and candidates have a right to ensure that the vote which is cast is accurately reflected in the results."
Fine Gael's Sean Kelly and Fianna Fáil's Billy Kelleher have already been elected in the constituency.
Fine Gael's Deirdre Clune and Independent Mick Wallace were also expected to take seats.
All eight seats in Ireland's two other constituencies have been filled.
Newly-elected Dublin MEP Ciarán Cuffe tweeted from Brussels earlier: "Hoping against hope that the wonderful @GraceOSllvn will be elected today in #IrelandSouth to @Europarl_EN and join me here in Brussels".
There’s an empty seat beside me. Hoping against hope that the wonderful @GraceOSllvn will be elected today in #IrelandSouth to @Europarl_EN and join me here in Brussels with @GreensEP #EP2019 pic.twitter.com/ThscSSLUoe
— Ciarán Cuffe (@CiaranCuffe) May 30, 2019