Anyone have any idea how the little scrolling “Audience Reaction” is measured? CNN has one trendline for independents, republicans, and democrats, and I’m not sure where they’re getting those numbers.

Update 1: Dennis left a comment with this CNN link which gives a partial answer: “Voters watch the debate from Columbus, Ohio, and give their reaction to the responses in real-time.” But how this is done is not clear; nor is it stated how they gauge who is republican, democratic, or independent (presumably self-identification).

Update 2: Ernanio points out “They have a bunch of potential voters from OHIO seated in a room with a dial thingamaging on their hands that when rotated can go from 0 – 100 to show how much they are liking the candidates intervention.”