From "The Selling of the President 1968" by Joe McGinnis
Kevin Phillips, the “ethnic specialist,” was twenty-seven years old, pale and dour…
“Essentially what I do is determine what blocs can be moved in what states by what approach,” he said. “'Group susceptibility' I call it.
"For instance, in Wisconsin you have Germans and you have Scandinavians, and the two groups respond to very different things. First, we determine where the groups are and then we decide how to reach them. What radio station each listens to, and so forth.Sounds like the Obama campaigns except substitute Facebook and Twitter for radio and add special interest, gender, and race to ethnic groups. Yes, I did just compare the Obama campaign to the Nixon campaign.