 Complete the following phrase:  Three petitions challenging the result were made within the deadline, by Joanna Jordan, Charles Byrne, and Ciarán Tracey. These alleged variously that the Referendum Commission information booklet was biased and that the electoral register was unreliable, with unexplained deletion of older voters details and failure to delete those of emigrants who were thus able to travel back to vote despite being ineligible. Jordans unsuccessful petition against the childrens rights amendment delayed its enactment from 2012 until 2015. Enactment of the 2015 