I don't know much about Fatima Jinnah's campaign except what my dad told me--something like she ran a popular campaign, giving Ayub Khan tough time. I don't know if my family in Karachi supported her or not: We are from a textile industry background for generations, with origin in India, and under Ayub Khan's rule we greatly prospered. I don't know why we would have supported Fatima Jinnah against Ayub Khan. Maybe we did, maybe we didn't. My dad is gone to ask him that question now. But I also think Ayub Khan was an honest, hard-working person who did much good for Pakistan. I'd even say that today's Pakistan is even standing because of much of what he had accomplished. Never forget that by 1958, Pakistan was in a chaos. Never forget the number of Prime Ministers who, since the death of Liaqat Ali Khan, were inducted and removed.
But, yes, had Fatima Jinnah won in 1964, there wouldn't be a 1971. I don't particularly shed tears on the formation of Bangladesh. I think it was inevitable but not in 1971, starting with there is no 'B' in Pakistan. But I wish it was a peaceful divorce. I wish BD well.
About Bhutto despite all his faults--and there are many--religious extremism was not his introduction. The guy was a whiskey-drinking, Western-looking, wanna-be Socialist blah, blah. A tyrant, feudal hypocrite. But still towered above the pigmies that followed him especially with his foreign policy achievements before and after 1971. Even his worst critics--who are in the Noon League for obvious reasons--acknowledge him now. That he caved into to a few acts of 'Islamism' in his rule was under intense pressure from the religious lobbies. Otherwise, Bhutto was fine fooling people with his 'Socialism' to keep getting power. Not only he was going to be a clear winner in 1977, rigging or not, but in the 1979 municipal elections, despite Zia killing him, his political party won handsomely in Pakistan.