IE 11 is not supported. For an optimal experience visit our site on another browser.

Defiant base supports Trump's improbable rise

15:55

E.J. Dionne, columnist for the Washington Post and author of the upcoming "Why the Right Went Wrong," talks with Rachel Maddow about the appeal Donald Trump has for Republican voters and whether there is anything in Trump's right-wing populism that Democratic candidates can appeal to as well.