The European Parliament has voted in favour of adding an additional 11 MEP seats in the upcoming European elections.
Ireland is set to gain one additional seat under the arrangement.
It follows a recommendation from the Parliament's Constitutional Affairs Committee (AFCO).
The allocation of extra seats is designed to ensure the principle of "degressive proportionality", meaning smaller member states are not underrepresented.
Member states will have to agree to the measure before the extra seats can be allocated.
Spain and Netherlands are both on course to getting two seats.
The other countries recommended as getting one seat include Austria, Denmark, Finland, Slovakia, Latvia, and Slovenia.
Ireland currently has 13 MEPs and is now on course to have 14, with the Midlands-North-West constituency is being tipped as a possible beneficiary.
Earlier this week, Fine Gael MEP, Seán Kelly, a member of AFCO, said: "Ireland is a European success story and has been transformed by the opportunities that the EU offers.
"We have moved from a benefactor to contributor, and when you factor in Brexit, it makes sense for Ireland to have another MEP."
Ireland's new Electoral Commission will make the decision on which constituency will get the additional MEP before the end of August.
