You can still register to vote in time for the referendum on 25 May

You can use checktheregister.ie or inquire in your local library to see if you’re registered to vote. If not, you can still apply to be registered in time for the referendum.
The closing date for the supplement to the main Register of Electors is Tuesday 8 May 2018. Your application must reach your local authority by this date.
You can apply by completing form RFA2 (pdf), which is available to download on checktheregister.ie. There are detailed instructions on the form.