Sinn Féin finance spokesperson Pearse Doherty has told RTÉ Raidió na Gaeltachta that the party mismanaged its vote in Donegal, and that it should have sought a full recount when Gary Doherty was eliminated.
In an interview with Aodh Máirtín Ó Fearraigh, Mr Doherty also said that there would have been a bigger gap between Independent candidate Thomas Pringle and Sinn Féin’s Pádraig Mac Lochlainn had the party not followed the three-candidate strategy.
Mr Pringle narrowly defeated Mr Mac Lochlainn in the battle for the final seat in the constituency.
"Had we not run three candidates in the county, the gap between Thomas Pringle and Pádraig Mac Lochlainn would have been even greater.
"Although that strategy gave Pádraig the best chance, we have to ask ourselves questions about what we should do for the next election, can we divide up the county better, to manage the vote better."
Mr Doherty said that internal party opinion polls had shown Mr Mac Lochlainn's vote was low, and that he himself would be getting a lot of votes in Inis Eoghan and Letterkenny.
"We had known for a while ... the opinion polls we had done ourselves told us that Pádraig Mac Lochlainn's vote was low, but we didn't realise that Fianna Fáil's vote would be so high.
"So, two things happened there, Fianna Fáil's vote grew and took votes from Pádraig. At the end of the day, with the amount of votes we got, we should have taken two seats."
In the interview, he said that Fine Gael had big problems in Donegal, and that Dinny McGinley would not have managed to keep his seat had he been standing for election.
"It's clear that Fine Gael's vote went to Fianna Fáil. Dinny McGinley hasn't lost his seat since he first took it, so maybe it was a good thing that he wasn't standing, because there's no doubt [that he would have lost it[ ... they [FG] didn't have a second seat. They were lucky to get one."
Mr Doherty said that Sinn Féin would be examining its performance in the election next week.