Gerrymandering is unconstitutional because it treats voters unequally, diluting their voting power based on their political beliefs, in violation of the Fourteenth Amendment's guarantee of equal protection.
Definition.com
Definition.com
Gerrymandering causes policies to be enacted that do not accurately reflect the public will and ultimately a political minority is able to rule the majority. The plaintiffs conclude that: '[Gerrymandering] causes policies to be enacted that do not accurately reflect the public will. In the end, a political minority is able to rule the majority''4 US court for the Western District of Wisconsin.
Definition.com
Gerrymandering robs opposition voters of implicit bargaining power in that the presence of minority voters in a legislative district influences the majority party's choice of candidate.
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