The State body tasked with overseeing the electoral register is expected to publish a report on the accuracy of the list of voters after the general election.
An Coimisiún Toghcháin, an independent electoral commission, has begun to assess the register, which is operated by local authorities, for completeness and quality.
The commission has a concern that in many cases voters who may have moved from one constituency to another may not have been removed from the first local authority area where they lived, and may appear on more than one register.
Last month, the organisation's Chief Executive Art O’Leary told the Oireachtas Committee on Local Government that the "state" of the electoral registers had been a "longstanding issue of some concern" for TDs and senators.
He said: "Our function is to oversee the electoral register and we have engaged directly with every local authority through what has been a particularly busy and challenging year.
"Being clear, we are finding that there are wide variances between the resourcing of local authorities’ franchise functions, and also the performance of those functions."
At the moment there is no single central register of voters but multiple registers which are managed by each individual local authority.
The issue which has been encountered by the commission is that a single voter can appear on multiple registers.
There has been no evidence of widespread abuse of the system, but out of date lists of voters can lead to turnout figures being skewed because it appears that individuals did not turn up to vote when they voted in another constituency.
In the past, local authorities were under pressure to add voters when people moved to a new constituency.
However, the local authorities did not always go through all the necessary steps to remove the voters from their previous constituency.
Psephologist Odran Flynn, who first started analysing the electoral register two decades ago, believes an inaccurate electoral register is a leading factor in low election turnout figures.
Last month, Mr Flynn told Prime Time that there could be hundreds of thousands more names on the electoral register than there should be due to duplication.
