Until the 2013 elections, Karachi had 20 national seats — from NA-239 Karachi West to NA-258 Malir-cum-Karachi West. But in the recent delimitations, the city has gained one more seat, raising the total count to 21. This new seat is NA-252 Karachi West-V, which comprises Manghopir subdivision and some parts of Mominabad subdivision.

Previously, the constituency was overwhelmingly merged with the Orangi area of Karachi, which is mostly inhabited by the Urdu-speaking community. However, after the recent delimitation, the entire Manghopir subdivision is in the newly carved constituency, whose 60 per cent area is rural.

Read more here about the interplay between demographics and delimitation in west Karachi.