Michael Moore to release secret movie about Donald Trump

Michael Moore speaks during the PGA Produced By: New York Conference at Time Warner Center on October 24, 2015 in New York City. Photo / Getty

Michael Moore has premiered a surprise film discussing the presidential election just three weeks before Americans head to the polls.

Moore debuted Michael Moore in TrumpLand in New York on Tuesday night in front of an audience of his fans.

According to The Hollywood Reporter, the film features Moore speaking about both Republican nominee Donald Trump and Democratic candidate Hillary Clinton on stage earlier this month in Wilmington, Ohio, a hotbed of Trump support.

The liberal documentarian urged the crowd at Tuesday's premiere to vote for Clinton next month.

The Hollywood Reporter says the film will screen for one week at the IFC Center in Manhattan beginning Wednesday. It will also be shown at a theatre in Encino, California.

Moore says he hopes more theaters will be announced soon.

Hey NYC- Who wants a peek @ what I've been up 2? Tues, 9:30pm, IFC Center. TIx free, 1st come, b.o. opens 8:30pm. pic.twitter.com/SrAhaq74ME

— Michael Moore (@MMFlint) October 18, 2016

Moore was part of a whole new era of documentaries in 2004, when his film Fahrenheit 9/11 became a box office hit. It grossed $119 million at the domestic box office to become the highest grossing documentary of all time.

Filmmaker Michael Moore tipping his hat outside the chain link fence enclosing the Fisher #1 General Motors plant, the first plant organized by the UAW, that was closed down in 1988. Photo / Getty

It also inspired conservative filmmakers.

A recent example is Dinesh D'Souza's Hillary's America: The Secret History of the Democratic Party, which has so far grossed just over $13 million at the domestic box office.