Solanki is the son of former Chief Minister Madhavsinh Solanki who had built the KHAM (Kshatriya, Harijan, Adivasi, Muslim) coalition which had paid rich dividends to the party during his tenure.
The announcement was made by AICC General Secretary Gurudas Kamat who said the appointment has been done by party chief Sonia Gandhi.
Bharatsinh has been brought into the scene as the Congress is setting its house in order in the state ruled by Narendra Modi for over a dozen years before becoming the prime minister last year.
Bharatsinh had been the state Congress chief earlier too from 2006-2008.