Aspirants can ensure a comprehensive understanding of polity for UPSC exams by utilizing various study methods. Firstly, engaging with the Indian Constitution, dissecting its parts and provisions is essential. Regularly reading reliable sources such as newspapers, political journals, and online resources keeps them updated. Joining coaching classes or discussion groups can facilitate interactive learning. Additionally, using revision notes and taking mock tests can help reinforce knowledge. Lastly, understanding current events and government policies can provide real-world applications of polity concepts, which is crucial for analytical questions.