You can find the 8th edition of "Indian Polity" by M Laxmikanth in PDF format on Google Drive through various sources. However, I must caution you that downloading copyrighted materials without permission may be illegal. Therefore, I recommend purchasing the book from a reputable source or checking with your institution or library to see if they have a copy.

"Indian Polity" by M Laxmikanth is a widely read and highly acclaimed book on Indian politics, governance, and polity. The book has been a bestseller for many years, and its 8th edition is widely sought after by students, researchers, and civil services aspirants. The book provides a comprehensive overview of the Indian political system, covering topics such as the Constitution, federalism, parliamentary democracy, and the role of the judiciary.