Your link shows 81% in favour of abortion, with or without some restrictions, with 19% against abortion. Wanting abortion rights is not synonymous with being pro-choice, which carries implications of no restrictions at all.
I hope I didn't misunderstand what you wrote, but where did you get the idea that being pro-choice means the ability to get an abortion from 0 months to 9 months pregnant?
There is obviously a spectrum to being pro-choice, but if I had to bet I'd put the majority of pro-choice folks follow: that woman has the right to choose to have an abortion while the fetus is generally considered pre-viability by the medical profession and under extreme circumstances where the life of the mother is at risk and/or the baby is now non-viable or will suffer a short and traumatic life.
