Those who opposed the 8th amendment were accused of being pro abortion and running a campaign for abortion when they were questioning the flawed nature of the 8th amendment.
http://en.wikipedia.org/wiki/Eighth_Amendment_of_the_Constitution_of_Ireland
The 8th Amendment introduced the following clause into Article 40.3 of the Constitution:
3° 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.