Election strategist Prashant Kishor on Sunday formally joined the Janata Dal-United (JD-U) in the presence of Bihar Chief Minister Nitish Kumar ahead of the party's state executive meeting here.

JD-U spokesperson Sanjay Singh confirmed Kishor's joining. "Now Prashant Kishor is a JD-U leader," Singh said. Shortly after the announcement, Kishor tweeted: "Excited to start my new journey from Bihar!"