A paper just published reports that Republicans are more likely to have used the adultery website Ashley Madison than Democrats, while Libertarians were even more likely to do so.

That’s a claim that could ruffle some feathers, but the way in which the researchers conducted this study might be even more controversial. That’s because this paper is based on the 2015 Ashley Madison data leak, which exposed the personal data, including names and credit-card details, of millions of registered