gerrymandering

Noun
(uncountable)
- (politics) The practice of redrawing electoral districts to gain an electoral advantage for a political party.
Verb
- Present participle of gerrymander.
Origin
After the US Politician Governor Elbridge Gerry who was associated with a constituency said to resemble a salamander.
gerrymandering - Legal Definition

v
Apportioning legislative districts in a way calculated
to give an undue advantage to a political party, by concentrating its members
or separating those of another party from one another; implies lines drawn in
an otherwise illogical way.