When the Nerds Go Marching In
www.theatlantic.com/technology/archive/2012/11/when-the-nerds-go-marching-in/265325
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
How a dream team of engineers from Facebook, Twitter, and Google built the software that drove Barack Obama's reelection