Donegal County Council is currently renewing the electoral register for the County. If you’re not on the register, you can’t vote.
Previously, this would have required checking your name and address on the physical register at a local Library or Public Services Centre. Now, you can check it online at http://www.donegal.ie/eReg/.
I’d advise everyone to check the website, if you get a chance. If you’re not on the register then you can’t vote!