He was 65.
Sindhi had contested many Assembly and Lok Sabha polls in Ajmer in the past, the DPIR sources said.
He was also the owner and editor of a local newspaper in Ajmer.
Ajmer Lok Sabha constituency is locked in a direct contest between Union Minister and Rajasthan Congress President Sachin Pilot and Rajasthan BJP Minister Sanwarlal Jat, for which polling was held on April 17.
