What is gerrymandering, which Rahul Gandhi accused BJP of over delimitation Bill?

Congress' Rahul Gandhi accused BJP of “gerrymandering” Lok Sabha seats to its advantage through the Delimitation Bill, which aims to increase Lok Sabha seats from 543 to 850. Gerrymandering refers to manipulation of constituency maps to influence electoral outcomes in favour of a political party. It involves concentrating opposition voters into a few constituencies to limit their overall impact.