Apparently not enough to pass legislation.I would say that anyone that thinks that there should be little to no condition on abortions would qualify as prochoice.
Even I could compromise by agreeing that there would be no elective abortions after 24 weeks. But of course to make that compromise the Hyde Amendment has to go. I do not think that any abortion needs to be allowed at any time.
So with that, how many people are prochoice in America?