Who needs exit polls when you have Twitter and Facebook (FB)? Pew Internet has found that an estimated 22% of all registered voters in the United States have already spilled the beans about whom they supported in the 2012 presidential election. Pew says that roughly 25% of Obama supporters and 20% of Romney supporters have used either Twitter or Facebook to tell others about their votes. Broken down by age group, 29% of registered voters under the age of 50 used social media to broadcast their votes while just 17% of voters 50 years or older did the same. People desperate for Election Day predictions shouldn’t read too much into this result, however, as Pew says that its findings in this case are statistically insignificant for projecting final vote counts.