BSP candidate from Ambala Cantt. constituency Rajesh Chanalia was injured after being attacked with a sharp-edged weapon by two unidentified youths on Tuesday evening, police said. He was rushed to the civil hospital. BSP workers gathered at the hospital and demanded immediate arrest of the assailants. They demanded that sufficient security be provided to their leader. Senior police officers also visited the leader at the hospital. The matter is being investigated, the police said. The assailants managed to flee after the incident. The police have launched a search in the area to trace the assailants, the police said. Assembly elections in Haryana will be held on October 21.