Karachi: In the 2018 General Elections, Sindh recorded a voter turnout of 44.9% for its Provincial Assembly, with 10.46 million votes cast out of 22.39 million registered voters. This turnout highlights the region's distinct urban-rural political dynamics and its status as Pakistan's economic hub.

According to Free and Fair Election Network, Sindh's electorate in 2018 was primarily male, comprising 12.44 million male voters (55.5%) and 9.96 million female voters (44.5%). Male voters participated at a rate of 42%, while female voters had a slightly higher turnout of 46.7%. The gender turnout gap was 4.7 percentage points.

The province also encountered 431,993 rejected ballots, accounting for 4.1% of the total votes polled. This rejection rate is consistent with the 2013 elections, reflecting potential changes in electoral processes and voter roll complexity. Over the decades, Sindh's electoral engagement has varied significantly, with turnout peaking at 60.7% in 1988 and dropping to a low of 29% in 1997. The registered electorate has seen significant growth, expanding from 5.3 million in 1970 to 27.0 million in 2024.