A signifciant fraction of persons, i.e. greater than 10%, who voted for socialist Bernie Sanders in the Democratic Party primaries voted for Donald J. Trump in the 2016 general election? Samuel Scheffler writes in The Boston Review: “… some of the people who voted for Sanders in the primaries—12 percent according to two surveys—voted for Trump in the general election, and their influence was especially significant in the crucial states of Pennsylvania, Wisconsin, and Michigan. Trump was, one might almost say, Bernie Sanders’s evil twin.” Mr Scheffler, however, does not provide links to the “surveys,” so we have no way of assessing their reliability. In any case, given Trump’s not unprecedented electoral success (cf. Silvio Berlusconi’s rise and fall in Italian politics), will the number of dangerous demagogues in the USA continue to rise, or will this number level off or even decline?