Implementing partisan symmetry: Problems and paradoxes

@article{DeFord2021ImplementingPS,
  title={Implementing partisan symmetry: Problems and paradoxes},
  author={Daryl R. DeFord and Natasha Dhamankar and Moon Duchin and Varun Gupta and Mackenzie McPike and Gabe Schoenbach and Ki Wan Sim},
  journal={Political Analysis},
  year={2021}
}
We consider the measures of partisan symmetry proposed for practical use in the political science literature, as clarified and developed in Katz-King-Rosenblatt. Elementary mathematical manipulation shows the symmetry metrics derived from uniform partisan swing to have surprising properties. To accompany the general analysis, we study measures of partisan symmetry with respect to recent voting patterns in Utah, Texas, and North Carolina, flagging problems in each case. Taken together, these… 

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