That concept isn't what got Trump elected.
Cambridge Analytica got him elected. The superior data they had got him elected. He went out and promised the rust belt, among others) exactly what they wanted, and they took a chance on him after decades of being lied to by the Democratic party. Then combine that with the blatant gerrymandering, and you have a win for the greedy morons.
While that was happening the Democratic party was on a fools errand to try and flip Texas blue.