'Harry Potter' and 'Twilight' fans have long been pitted against each other.

For example, for the upcoming People's Choice Awards, only Emma Watson made the cut to represent the 'Harry Potter' kids -- a crime against Rupert Grint and Daniel Radcliffe! Meanwhile, both Robert Pattinson and Kristen Stewart of 'Twilight' garnered nominations. Read more on the People's Choice Awards Nominations for Favorite Movie Star Under 25.
'Twilight' and 'Harry Potter' are both fantasy books-turned-movies, and they've shared one actor in the form of Mr. Pattinson (who played Cedric in 'Potter' and now plays Edward in 'Twilight'). They have also both achieved cult-like devotion from their rabid fans.

Before the next 'Potter' film comes out on Nov. 19, we're curious to see which movie (and book) series' fans have the strongest base.

For one thing, we're looking for the biggest 'Harry Potter' fans and biggest 'Twilight' fans to submit videos about why they're the best and craziest representatives for their franchise. Think you have what it takes? Submit your video about why you're the biggest 'Harry Potter' or 'Twilight' fan of them all. Winner gets bragging rights and possibly the chance to thumb-wrestle your 'Potter' or 'Twilight' counterpart.

ENTER OUR CONTEST FOR THE BIGGEST 'HARRY POTTER' FAN


ENTER OUR CONTEST FOR THE BIGGEST 'TWILIGHT' FAN


Also, we'll be creating regular polls to decide who is the biggest, most passionate fanbase -- Potterheads or Twi-hards. Here's the first question, on the series' main heroes. Come on, fans, let's have it out once and for all.

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Harry Potter and the Deathly Hallows: Part I
PG-13 2010
Based on 42 critics

Harry, Ron and Hermione set out to destroy the Horcruxes, the secrets to Voldemort's power. Read More

Twilight
PG-13 2008
Based on 37 critics

A teen (Kristen Stewart) is caught up in an unorthodox romance with a vampire (Robert Pattinson). Read More