By Katie Meyer

Less than .3% separated Hillary Clinton and Bernie Sanders in yesterday’s Iowa caucuses. Hillary Clinton took 49.9% of votes while Bernie Sanders squeezed in behind with 49.6%. It hasn’t been this close in years: in 2008, Obama won in Iowa 10 percentage points ahead of Clinton.

The Iowa caucuses have high degree of success rate in predicting the Democratic nominee for President. In this election, the race seems too close to call. Can social media act as a tie-breaker between Hillary and Bernie, and help predict who will win the nomination?

The Few, the Engaged

In 2015, former Secretary of State Hillary Clinton was viewed as a shoe-in for the nomination. She was endorsed last week by The New York Times’ editorial board as the better option (“one of the most broadly and deeply qualified presidential candidates in modern history”).

But Bernie Sanders, considered an underdog in 2015, has the same outsider’s appeal on the Democrat side as Trump has for Republicans. As discovered using Crowdbabble’s analytics engine, Sanders’ fanbase on Twitter, Instagram, and Facebook has been expanding more quickly since the January 17 debate. The Vermont senator’s engagement rate — the percentage of followers who like, comment, or share each of his posts — is higher overall.

Below, Sanders’ engagement rates on Facebook, Twitter, and Instagram, as found in Crowdbabble. The senator’s followers are substantially more engaged than Clinton’s on Instagram and Twitter.

Hillary’s engagement rate on Facebook has slid since the January 17 debate, but her Page fans are more active than Bernie’s.

On Facebook, the Clinton campaign is working harder. Hillary has posted 101 times since January 25, while the Sanders campaign has posted 38 times.

Below, a collection of statistics on Bernie and Hillary’s performance over the past week, collected in Crowdbabble: