Target Keyword: Indian Polity by Laxmikant PDF Google Drive 8th Edition PDF Top
New Sections: Includes 18 appendices (9 in-book and 9 on the McGraw Hill Edge platform).
No official free PDF: McGraw Hill has never released an official free PDF of the 8th edition. Any link you find is unauthorized.
Long Answer: If you are desperate and absolutely cannot afford the book, and you are only in the first week of your preparation to understand basic concepts (like Federalism or Fundamental Rights), you might use the 8th edition PDF temporarily.