A report by the Dáil's ethics watchdog, which was finalised today, has determined that while the Fianna Fáil TD Lisa Chambers had "voted incorrectly" in a colleague's seat, it "had been done inadvertently".
Yesterday, RTÉ News reported that the committee had found Ms Chambers to be "negligent", but this was inaccurate.
The Dáil's Committee on Members' Interests has been considering a complaint by Fine Gael TD Noel Rock, and a member of the public, against four Fianna Fáil TDs on the voting irregularities.
Regarding Ms Chambers, the committee "noted" that she admitted to voting incorrectly and "failed to correct the record with the teller", but has "apologised in the Dáil for doing so".
The report states the matter is one of "significant public importance", adding that: "The misuse of electronic voting system is a serious contravention of the ethics legislation given the adverse effects this incident has had on the maintenance of confidence in the performance of the deputy's duties by the general public."
In a statement to the Dáil last October, Ms Chambers explained what happened by saying: "I did not inform the teller at the time of the vote cast in error as I genuinely thought it was an insignificant error.
"I fully accept now that I should have done so at the time and I sincerely apologise to the House and to the public for not doing so."
The report by the Dáil's Committee on Members' Interests said: "It was irrelevant whether a vote is won by a large or small majority, each vote is an important vote and all deputies should follow the correct procedure to vote each time."
However, the report concludes that the committee "determined that the contraventions at issue had been done inadvertently ... [and] that the deputy had acted in good faith and in the belief that her actions were in accordance with the guidelines".
Yet the committee also warned that "a repetition of the contravention of the rules in the future could lead to a finding that the deputy had acted recklessly or intentionally".
The report concludes with a recommendation that "a motion to take note of this report be moved in the House".