Polity and Governance is a very simple subject in which you can score even 100% of marks. Most of the time, questions are simple and direct. However, a few questions require a deep understanding of the concepts. Indian Polity by M. Laxmikanth is the single outstanding book to read for Polity and Governance. No other textbook or website is needed. You can easily score 8 out of 10 questions if you have thoroughly studied it.
References
Most Important Chapters