Gerrymandering

Gerrymandering is the deliberate drawing or alteration of electoral constituency boundaries to give a political party or group an unfair electoral advantage. It manipulates which voters are grouped together so that their geographical distribution produces a favourable distribution of seats, rather than providing impartial representation.

How boundary manipulation works

Under a first-past-the-post system, the candidate with the most votes in each constituency wins. Consequently, changing constituency boundaries can change the overall seat distribution even when voters’ political preferences remain unchanged.

• Packing concentrates an opponent’s supporters in a few constituencies, where they win by large margins but have reduced influence elsewhere.
• Cracking divides an opponent’s supporters among several constituencies so that they are outnumbered in each.
• An unusual constituency shape may invite scrutiny, but shape alone does not establish manipulation because geography and legitimate administrative considerations also influence boundaries.

Why it matters for representation

Gerrymandering can create a vote-seat distortion: a party’s share of seats may reflect an engineered electoral map rather than its underlying electoral support. However, disproportionate results alone do not prove gerrymandering, since electoral systems and the natural concentration of voters also affect outcomes.

• It can weaken electoral competition by creating constituencies in which a favoured party enjoys a durable advantage.
• It differs from malapportionment, which means unequal population sizes across constituencies and therefore unequal weight of representation; boundary manipulation can occur even where constituency populations are broadly equal.

Delimitation and safeguards in India

Delimitation is the lawful process of determining electoral constituency boundaries; it is not inherently gerrymandering. The concern arises when boundary choices are manipulated for partisan or group advantage.

• Articles 82 and 170 provide the constitutional framework for readjustment of Lok Sabha and State Legislative Assembly constituencies, subject to constitutional conditions.
• Under the Delimitation Act, 2002, the Delimitation Commission must consider geographical compactness, physical features, existing administrative boundaries, communication facilities and public convenience.
• The Act provides for publication of proposed delimitation arrangements, consideration of objections and suggestions, and public sittings. These procedures enable scrutiny of boundary choices.