To divide unfairly and to one's advantage; of voting districts.
to divide electoral districts for one's own political gain
divide into electoral wards, etc., in such a way as to gain political advantage; distort or use facts, etc., to gain advantage.
In politics, to rearrange constituency boundaries to give an unfair advantage to the ruling party.
The term derives from US politician Elbridge Gerry (1744–1814), who in 1812, while governor of Massachusetts, reorganized an electoral district shaped like a salamander in favor of his party.
The restructuring of local authorities in Scotland 1995 was perceived as an instance of gerrymandering by the Conservative Party, who nonetheless did not control a single council after the subsequent election.
1. To hold something in one's hands and move it.
2. To treat manually, in physiotherapy.
3. To influence or control shrewdly or deviously:
4. To influence skilfully to one's advantage; SYN. control.