Hyperbole is your friend I take it. He was such a “vigorous advocate” that there is exactly one mention of the subject, from the VP debate, when he answered a question about his view. I figured you must have discovered that he was front running for Planned Parenthood.
Stockdale did an interview with Jim Lehrer c. 2000 for a program about recent presidential debates (up to that time).; In that program, he went out of his way to express support for abortion. He said his daughters and daughters-in-law would “kill” him were he not an abortion booster.