Millions of voters in US states crucial to this fall's presidential election received DVD copies of a controversial documentary film as advertising inserts in their morning newspapers last week, with more sent out over the weekend.

The 2006 film, "Obsession: Radical Islam's War Against the West," which has been accused by critics of encouraging Islamophobia, was reportedly delivered, or slated for delivery this weekend, into tens of millions of households in states such as Ohio, Michigan, Florida, Colorado, North Carolina, Pennsylvania, Missouri and other "swing states" that don't vote consistently for either party and usually decide elections.