Disadvantages of Gerrymandering:

• the number of representatives for each party elected do not match the population’s actual preferences.
• reduced competetion between political parties means the population’s needs receive less attention.

Disadvantages of a one party dictatorship:

• The number of representatives for each party elected do not match the population’s actual preferences.
• Absent competetion between political parties means the population’s needs receive no attention.
• no checks and balances means no bill of rights exists.
• no checks and balances also means no regulation to protect the population’s needs.
• possible human extinction in nuclear winter.