… “Big data” is a buzzword, but that concept is outdated. Campaigns have entered the era of “little data.” Huge data sets are often less helpful in understanding an electorate than one or two key data points — for instance, what issue is most important to a particular undecided voter.
With “little data,” campaigns can have direct, highly personalized conversations with voters both on- and offline, like an ad on a voter’s Facebook page addressing an issue the voter is passionate about. In 2016, we see that online political engagement rates (especially for young voters) are at a historic high.
This is why campaigns no longer pay much attention to public polls, which often use conversations with just a few hundred people to make predictions about the entire electorate. CONT.
Jim Messina (Messina Group), New York Times