FIANNA Fail has confirmed it "looked into" why more than 200 applications for party membership were rejected.
A spokesman said certain membership-related matters concerning a cumann in Kerry South were examined by the party's membership committee prior to Christmas but the matter was now closed.
The majority of rejected applications were from Kenmare, the base of Senator Mark Daly.
Mr Daly said it was "disturbing" that the applications had been blocked by the party.
"We're trying to rebuild the party and get more people involved and encourage new members to join," he told the Irish Independent.
But a Fianna Fail spokesman said "incomplete" contact details for the new members were provided to the party.
"The committee sought clarity on the matter. Unfortunately, no clarification was forthcoming. If the relevant cumann communicates the required information to the committee's satisfaction, it may review the matter," he said.