Via Nate Silver, the electoral implications of hypothetical solely-male and solely-female electorates in the US (2016):
Given the absence of a realistic geo-political segregation option, continuing tension can be safely anticipated. (There still has to be a way to break the place up that makes more sense, such as starting with the places that don’t change color when gender-flipped.)
http://www.nytimes.com/2016/10/12/business/dealbook/central-banks-consider-bitcoins-technology-if-not-bitcoin.html