The discovery of the 31-year-old doctor's bloodied body at a state-run hospital in the eastern city of Kolkata on August 9 sparked furious protests in several cities across the country.
With a net worth estimated at $123 billion by Forbes -- and one of Asia's most powerful people, Ambani has for years been emblematic of India's growing economic clout.
The Ram temple was constructed on orders of the Supreme Court after a bloody, decades-long dispute that in 1992 saw a Hindu crowd demolish a 16th century mosque that existed on the site, claiming it was built on the birthplace of the god-king.
The 73-year-old leader is widely expected to win a third term when the poll concludes early next month, thanks in large part to his aggressive championing of India's majority Hindu faith.