A study by Socialbakers presents the pieces of content on candidates' pages that had the most activity in the month of December.
President Barack Obama was the most viral with a family portrait posted on Dec. 15 that racked up nearly 87,000 likes. He has about 19 times as many Facebook fans as Mitt Romney, which means virtually all of the posts on his page have sky-high engagement when compared to any of the many Republicans looking to unseat him. Despite Democrats' ambivalence toward the president, Michelle Obama's popularity remains high, which explains why the photo performed well.
A Dec. 30 post on Mitt Romney's page stating, "The President spends a lot of time apologizing for America. He should be apologizing to America," scored 25,000 likes and was not a "sponsored story," according to Romney's digital director, Zac Moffatt.