An understanding of constitutional law significantly impacts UPSC interviews since a candidate's comprehension of the Constitution reflects their grasp of fundamental governance principles. Interviewers often evaluate candidates on their knowledge of key articles, rights, and duties outlined in the Constitution, assessing their ability to critically analyze current issues through this legal framework. Candidates who demonstrate a solid grasp of constitutional provisions are better equipped to articulate their views on governance, rights, and the role of civil services, thus enhancing their overall interview performance.