Facebook Expands in Politics, and Campaigns Find Much to Like

When Gov. Scott Walker kicked off his presidential bid this month, supporters who visited his website could view photographs of him, peruse his announcement speech, and read about the Wisconsin Republican’s life and accomplishments.   Using a bit of code embedded on its website, the Walker team was able to track who visited the donation page, tell which potential backers shared interests with existing supporters, and determine who was learning about the candidate for the first time. It could then use that information to target prospective voters with highly personalized appeals.