But there is no need to interpret anything -Church teaching is quite clear and explicit. In fact the only people calling for interpretation are those trying to rationalize rejecting Church teaching.
*“No, you can never vote for someone who favors absolutely what’s called the ‘right to choice’ of a woman to destroy human life in her womb, or the right to a procured abortion,”
“You may in some circumstances where you don’t have any candidate who is proposing to eliminate all abortion, choose the candidate who will most limit this grave evil in our country, but you could never justify voting for a candidate who not only does not want to limit abortion but believes that it should be available to everyone”
Cardinal Burke*
*In considering “the sum total of social conditions,” there is, however, a certain order of priority, which must be followed. Conditions upon which other conditions depend must receive our first consideration. The first consideration must be given to the protection of human life itself, without which it makes no sense to consider other social conditions. “The inalienable right to life of every innocent human individual is a constitutive element of a civil society and its legislation” (Catechism of the Catholic Church, No. 2273). *