gerrymanderverb [ T ]
us/ˈdʒer·iˌmæn·dər/politics & government to divide an area into election districts (= areas that elect someone) in a way that gives an unfair advantage to one group or political party
gerrymandering
noun [ U ] us/ˈdʒer·iˌmæn·də·rɪŋ/
Enlarging the district to dilute the Latino vote is a blatant example of gerrymandering.