Understanding the Indian Constitution is crucial for UPSC aspirants, as it lays the foundation for governance, law, and civil rights in India. Proficiency in constitutional provisions can help candidates tackle questions related to polity, governance, and legal frameworks, which are integral to both the preliminary and mains exams. It enhances the aspirant's analytical abilities in discussing contemporary issues, as many questions relate to constitutional principles. A solid grounding in the Constitution also proves invaluable during the interview, demonstrating the candidate's grasp of fundamental democratic values.