ger·ry·man·der /ˈjerēˌmandər/
verb:
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gerund or present participle: gerrymandering
manipulate the boundaries of (an electoral constituency) so as to favor one party or class.
– achieve (a result) by manipulating the boundaries of an electoral constituency. “a total freedom to gerrymander the results they want”
How Gerrymandering works
Three examples
District 4 North Carolina
This district in Florida stretches miles combining rural mostly democratic areas with high density population areas, mostly republican, along the beaches
Florida District 5 stretches miles to combine African American or Black Alone into a single district. This allows three other districts to be dominated by fewer, but mostly white republican voters,.