Oppure no:

..."But interviews with 13 former employees, campaign staffers, and executives at other Republican consulting firms who have seen Cambridge Analytica’s work suggest that its psychological approach was not actually used by the Trump campaign and, furthermore, the company has never provided evidence that it even works. Rather than a sinister breakthrough in political technology, the Cambridge Analytica story appears to be part of the traditional contest among consultants on a winning political campaign to get their share of credit — and win future clients."...