Iowa, New Hampshire, and South Carolina have marked the route to the White House for more than a generation. But in 2016, the path to the presidency will run through new territory—your Facebook news feed.
As the race begins in earnest, the world’s largest social network is emerging as the single most important tool of the digital campaign, with contenders as different and disparate as Hillary Clinton and Ben Carson, Rand Paul and Bernie Sanders, all investing in the platform already.
