At one end of the scale were voters who were considered to be sympathetic to the Trump campaign; at the other were those who were regarded as hostile.
However, a key audience was categorised as "Deterrence", voters whom the Trump campaign wanted to dissuade from participating in the election.
According to Channel 4, 3.5 million African Americans were classified in this group.
They were targeted for negative adverts designed to weaken support for Hillary Clinton, including a video in which the former First Lady and Secretary of State referred to black youths as super predators.
So, the way to dissuade people from voting is to tell them truths about your opponent? Or, actually, with Hillary remind them who your opponent is? With a piccie?