A plethora of smaller theater chains and independent theaters, but none of the biggest exhibitors, joined Fox Searchlight Pictures in opening their lobbies to a voter registration drive associated with promotional screenings and the opening of The Birth Of  A Nation on October 7.

Fox on Monday announced a roster of participants that included Bowtie Cinemas, Marcus Theatres and Movie Taverns, among others. But power players like AMC, Regal and Cinemark were not on the list. Backers of the registration drive included public interest organizations like the League Of Women Voters and the National Coalition Of Black Civic Participation.

The registration push is planned to begin with the promotional screenings on National Voter Registration Day, September 27, and continue on the film’s opening weekend, Fox Searchlight said.