Why 'Weiner' Documentary Is Also About Donald Trump

— -- Who knew a documentary on disgraced former Rep. Anthony Weiner would say so much about both parties' presumptive 2016 presidential nominees, Donald Trump and Hillary Clinton?

Elyse Steinberg and Josh Kriegman, the filmmakers behind the newly released Sundance award-winning documentary “Weiner,” were given unprecedented access to follow the scandal-plagued politician's failed shot at redemption during his 2013 campaign for New York mayor.

ABC News got the inside scoop on how the duo's message is also aimed at Trump and what they think Huma Abedin, one of Hillary Clinton’s closest advisers and Weiner’s wife, hoped to gain from sharing such a candid look at her marriage.

For all this and more, watch ABC’s Rick Klein interview Kriegman and Steinberg above.