In which landmark judgment did the Supreme Court hold that the 'Right to Know' about the antecedents (assets, liabilities, and criminal records) of a contesting candidate is a fundamental right of a voter under Article 19(1)(a)?

Explanation

In the Union of India vs. ADR case (2002), the Supreme Court ruled that a voter has a fundamental right to know the background of candidates under Article 19(1)(a) (Freedom of Speech and Expression), stating that democracy cannot survive without informed citizens.