The Catholics that I have known who are pro-choice, pro-contraception and so on are also quite politically liberal. Imho, their lack of commitment to the Church may be as much due to a political perspective as it is due to religious beliefs or teachings. They have chosen to disregard all that does not conform to their world view, or that they perceive to be difficult.
Complete havoc.
By propagating the idea that when one casts a vote one must not only consider the issue of abortion but also the death penalty for instance, or nuclear disarmament, you've immediately clouded the issue. It's no longer a simple choice.
It's brilliant and the very definition of confusion. You don't deny outright that abortion is the overriding issue. You simply go in search of other issues, wring your hands, and lament how many other situations there are where human life is not respected.