The Biggest Stories of March 27, 2018

Karnataka votes on May 12, results out three days later, Election Commission orders probe into dates being tweeted before official announcement; Congress was a client of disgraced firm Cambridge Analytica, a whistleblower at the heart of the Facebook data breach scandal says in his testimony before UK lawmakers; Amit Shah embarrasses BS Yeddyurappa, calls him most corrupt in a slip of tongue and then corrects himself; Mamata Banerjee begins political outreach in Delhi with Sharad Pawar; and more in our news wrap of the day.