Cambridge Analytica: how big data shaped the US election

The Clinton campaign has mounted one of the most sophisticated operations in political history. Subscribe for more like this every day: http://bit.ly/1epe41j

Across the key battleground states they've been raising vast sums of money, targeting supporters, running ads, preparing to get out the vote.

Donald Trump has done relatively little of this - so how big a difference could it make?

Видео Cambridge Analytica: how big data shaped the US election канала Channel 4 News