So the ruling party in my home country lost nearly 96.4% of its traffic due to the Google Core update..

In case you aren't aware, in terms of the number of people associated with it, Bhartiya Janta Party or BJP is the largest political organization in the world, and has been the ruling party in India for the last 7 years.

And Google absolutely decimated their website with their Ahrefs traffic down from 84K to 3.1K. Just goes to show, Google won't spare you if you aren't following the rules.