Discovered the hidden part of my wife's life which left me shattered

Salam, guys.
I won’t take much of your time, so I’ll jump directly to the point. I (28M) have been happily married to the love of my life (26F) for the last two years, and we’re expecting our first baby soon. I've been really excited, and everything seemed to be going perfect until recently when I discovered that she’s a big—and I mean really BIG—Nawaz Sharif fan.

Now, I know this isn’t rare in this country. I come across such people in my daily life, but I usually avoid interaction because of their narrow-mindedness. However, I never could have imagined that my very own wife, who I thought I knew so well, would turn out to be someone like this. It took me some time to recover from the shock. I haven’t confronted her yet to avoid escalation, but I did discuss the matter with my parents.

To give you some background: my parents are also die-hard PTI supporters, just like me. We’ve always attended PTI rallies and jalsas together. Anyway, my parents were disappointed when I told them, but they didn’t really support me. They said I need to keep this marriage intact for the sake of the baby we’re about to have.

I understand that a baby is one of the most important things in life, but how can I raise a child whose mother’s mindset is so corrupted at its core? How is she going to raise the baby? What if the baby ends up adopting the same ideology as hers?

I’ve loved this woman with everything I had inside me, and I can’t believe that the person I loved the most has turned into a stranger to me.