How is the "Audience Reaction" meter measured? This was shown on CNN during the Presidential Debate.?

Answer 1

Best Answer - Chosen by Voters

They selected several voters in Columbus, Ohio who were given a dial that ranges from 0-100 to demonstrate how they feel at any given moment.

Source(s):

http://www.mychances.net/blog/2008/09/26…

Answer 2

CNN has chosen 3 audience members to give their reactions to CNN by giving them through a pulse machine. This is possible by seeing their pulse and looking at how it rises and lowers based on the questions asked. Also, those same people have a handheld device where they press 1 of three buttons meaning plus a little, minus a little, or back to neutral.( Used after each question.)
Hope this helps.

Source(s):

cnn.com