Expats from around the world have been returning to their homeland in droves to cast their votes, while anti-abortion Americans have also been travelling to the country to stage protests (despite being pelted with eggs).
If the 8th amendment is repealed, the Irish government will create legislation that allows abortions up to 12 weeks after gestation, or up to 24 weeks if the woman's health is seriously at risk.
Saoirse Ronan, Cillian Murphy, Aisling Bea and others recently appeared in a video backing the repeal of the 8th amendment. Watch the clip below.
See how some of Ireland's other most famous faces are encouraging citizens to vote today.
Cmon Ireland ! This is your day to make another great decision. Please do right by the great women of our nation . 🇮🇪— Niall Horan (@NiallOfficial) May 25, 2018
Sending big love and best wishes to my sisters and brothers in the Republic of Ireland, where I was lucky to live for 5 years. Tomorrow the nation has the chance to really come of age. Time to strike a blow for freedom and good sense. #Repealthe8h— Irvine Welsh (@IrvineWelsh) May 24, 2018
I'm feeling the tension in Ireland all the way over here in London. Sending love and solidarity to all those women and men feeling anxious today. Wishing wishing for a yes. #Repealthe8h— Annie Mac (@AnnieMac) May 25, 2018
Irish women are sharing some of the most intimate and difficult times of their lives during this campaign. To help other people. Their bravery and grace will go down in history. Thank you. #VoteYes https://t.co/FbZYbJr6CE— chris o'dowd (@BigBoyler) May 15, 2018
Just on my way to work. For any of my Irish friends who are just leaving work, be sure to vote Yes to #Repealthe8th on your way home. Cheers— Ed Byrne (@MrEdByrne) May 25, 2018