摘要：The article of Cho and Rubinstein-Salzedo seeks to cast doubt on our previous paper, which described a
rigorous statistical test which can be applied to reversible Markov chains. In particular, Cho and RubinsteinSalzedo
seem to suggest that the test we describe might not be a reliable indicator of gerrymandering, when
the test is applied to certain redistricting Markov chains. However, the examples constructed by Cho and
Rubinstein-Salzedo in fact demonstrate a different point: that our test is not the same as another class of
gerrymandering tests, which Cho and Rubinstein-Salzedo prefer. But we agree and emphasized this very
distinction in our original paper. In this reply, we reply to the criticisms of Cho and Rubinstein-Salzedo,
and discuss, more generally, the advantages of the various tests available in the context of detecting
gerrymandering of political districtings.
