### Analysis of Recent Trends
In recent civil services preliminary examinations, questions on Indian Polity have shifted from direct statutory recall to constitutional philosophy and judicial interpretation.
### Core High-Yield Topics
1. **Preamble & Basic Structure Doctrine**: Kesavananda Bharati case principles.
2. **Part III Fundamental Rights**: Article 14, 19, 21 and the boundaries of reasonable restrictions.
3. **Separation of Powers**: Ordinance-making powers (Art 123) and parliamentary privileges.
4. **Federal Fiscal Relations**: Finance Commission recommendations and GST Council governance.