Congress chief Rahul Gandhi has gone to the grassroots to select Chief Ministers for Madhya Pradesh, Rajasthan and Chhattisgarh. The process is democratic, and works like a secret ballot.Over the last 24 hours, an audio message from Mr Gandhi has gone to 7.3 lakh party workers across the three states, in which they have been asked to respond, indicating their choice, and promised complete confidentiality.