In how many National and Provincial Constituencies by elections were held on 15th October 2018?

Explanation
  Elections for the National/Provincial Assemblies' 37 Constituencies On 14 October 2 018. By-elections are scheduled to be held in Pakistan on 14 October 2018 and 21 October 2018. These elections will be held in 12  constituencies for the National Assembly of Pakistan And 27 constituencies belonging to the four provincial assemblies of Pakistan Provincial Assembly of Punjab Provincial Assembly of Sindh Provincial Assembly of Khyber Pakhtunkhwa Provincial Assembly of Baloch istan