That may have been helped by 'Harry Potter' author J.K Rowling who celebrated the 'Yes' vote on twitter at the time.
Sitting here watching the Irish make history. Extraordinary and wonderful.— J.K. Rowling (@jk_rowling) May 23, 2015
.@cassie10yson I don't have the right to be proud, as I'm not Irish. I'm in awe, that's what I am - Ireland has set an example to the world!— J.K. Rowling (@jk_rowling) May 23, 2015
.@justaoifethings 💚🍀🌈💚 Then they could get married IN IRELAND! 💚🍀🌈💚 pic.twitter.com/yXedPavZfp— J.K. Rowling (@jk_rowling) May 23, 2015
.@WBCsigns Alas, the sheer awesomeness of such a union in such a place would blow your tiny bigoted minds out of your thick sloping skulls.— J.K. Rowling (@jk_rowling) May 26, 2015
It was done to focus "on the message of the event and not specifically the people putting it on."