President of Pakistan Muslim League-Nawaz (PML-N) Nawaz Sharif (R front) speaks during a press conference with chief of Pakistan Muslim League-Functional (PML-F) Pir Pagara (L front) in southern Pakistani port city of Karachi on Feb. 26, 2013. Pakistan Muslim League-Nawaz (PML-N) and Pakistan Muslim League-Functional (PML-F) agreed on alliance in the general elections on Tuesday. (Xinhua/Masroor)

President of Pakistan Muslim League-Nawaz (PML-N) Nawaz Sharif (2nd L) talks with chief of Pakistan Muslim League-Functional (PML-F) Pir Pagara (1st L) during a meeting in southern Pakistani port city of Karachi on Feb. 26, 2013. Pakistan Muslim League-Nawaz (PML-N) and Pakistan Muslim League-Functional (PML-F) agreed on alliance in the general elections on Tuesday. (Xinhua/Masroor)

President of Pakistan Muslim League-Nawaz (PML-N) Nawaz Sharif (L) talks with chief of Pakistan Muslim League-Functional (PML-F) Pir Pagara during a meeting in southern Pakistani port city of Karachi on Feb. 26, 2013. Pakistan Muslim League-Nawaz (PML-N) and Pakistan Muslim League-Functional (PML-F) agreed on alliance in the general elections on Tuesday. (Xinhua/Masroor)