The campaign additionally noted that they would continue fighting for the right to life in Ireland, saying that "every time an unborn child has his or her life ended in Ireland, we will oppose that, and make our voices known."
"Abortion was wrong yesterday. It remains wrong today. The constitution has changed, but the facts have not," the statement continued.
Exit polls by the RTÉ are projecting 69.4 percent of citizens voted against keeping the Eighth Amendment in the Republic of Ireland's constitution, while 30.6 percent voted to keep it, according to the BBC.
80 percent of the votes have been counted, according to the New York Times, but official results are expected on Saturday evening.
On May 25, Ireland held a referendum on whether to repeal the country's Eighth Amendment, which recognizes the equal right to life of the mother and the unborn child. Under current law, the practice of abortion in Ireland is illegal, unless the mother's health is deemed to be endangered.
The Eighth Amendment was passed in Ireland in 1983, with upwards of 67 percent voter-approval. It reads, in part: "The State acknowledges the right to life of the unborn and, with due regard to the equal right to life of the mother, guarantees in its laws to respect, and, as far as practicable, by its laws to defend and vindicate that right."
Several Irish lawmakers had previously said that if the referendum successfully repealed the eighth amendment, they would propose legislation allowing unlimited abortion up to three months into pregnancy, and up to six months into pregnancy in cases where there might be risk to a mother's physical or mental health.
Despite the high percentage of the population - 78 percent - that identifies as Catholic, polling was split in the weeks leading up to the vote.
On March 9 the Irish bishops had released a pastoral message on the right to life, entitled "Two Lives, One Love."
They warned that changing the Irish Constitution would serve no purpose other than to withdraw the right to life from some categories of unborn children.
"To do so would radically change the principle, for all unborn children and indeed for all of us, that the right to life is a fundamental human right," they said.