Yes to Marriage Equality/Gay Marriage:

http://www.marriagequality.ie/

www.yesequality.ie/

No to Marriage Equality/Gay Marriage: 

http://www.ionainstitute.ie/

http://mothersandfathersmatter.org/

IMPARTIAL WEBSITE

www.refcom.ie – the website of the Referendum Commission – also gives advice on the Age of Presidential Candidates Referendum