Mumbai, Oct 12 (UNI) The Maharashtra Navnirman Sena (MNS) on Monday launched a statewide signature campaign demanding the resignation of Chief Election Commissioner Gyanesh Kumar, with party president Raj Thackeray scheduled to join the drive at Mumbai's Chhatrapati Shivaji Park in the evening. MNS leader Sandeep Deshpande said signature collection began in the morning across various localities and public places in Maharashtra. "The campaign has been organised to build democratic pressure on Chief Election Commissioner Gyanesh Kumar to step down. Signature drives are underway across the state, while the main phase of the movement will take place this evening at…