Gandhinagar, June 6: The Aam Aadmi Party (AAP) in Gujarat faced a significant setback on Tuesday as its leader Uday Singh Chauhan, who had contested the elections from the Balasinor constituency in Mahisagar district, joined the Bharatiya Janata Party (BJP). Chauhan s move to join the ruling party is seen as a blow to the AAP s prospects in the state. The formal induction took place at the party s state office, Kamalam in Gandhinagar, in the presence of CR Paatil, the state president of the BJP.