PESHAWAR: Top leaders of the mainstream political parties, including Nawaz Sharif of the Pakistan Muslim League-Nawaz, Sirajul Haq of the Jamaat-i-Islami, Maulana Fazlur Rehman of the Jamiat Ulema-i-Islam-Fazl and Gohar Ali Khan of the Pakistan Tehreek-i-Insaf, on Friday filed nomination papers for contesting the Feb 8 general elections in Khyber Pakhtunkhwa for the National Assembly seats. The papers for Mr …