RNC data adviser Bill Skelly said that the party estimated that 135,824,656 people would vote nationally. Vote counts are still going on and are approaching about 128 million, and in key swing states, such as Florida, the GOP turnout model was off only small percentage points, he said.

The RNC used that data — which included not only names but likely preferences on issues — to target 40,000 to 60,000 daily Facebook messages to voters likely to support Trump and down-ballot Republicans, spending $200,000 to $300,000 daily on these highly specialized messages, party officials said. RNC volunteers and staff knocked on 24 million doors, twice the total of 2012, party officials claimed. The RNC spent $12 million updating its voter email lists.

“It was our job, in our estimate, to deliver every piece of data we possibly could,” Walsh said. “At the end of the day, the campaign is going to run the campaign they want to run, and they obviously made some very good decisions” based on the data.

Spicer said that the RNC went from being beaten twice by President Barack Obama’s campaign infrastructure — which used many of the same data-mining tactics — to one that “truly understands who is voting and how they are voting. So it is not just knocking on the door, it is knocking on the right door.”