Among registered voters, just one-in-five (21%) say they are undecided about their presidential vote choice or that they may change their mind before Election Day.
Users of Twitter, Facebook and blogs weighed in heavily on the Supreme Court Health Care ruling last week. PEJ examines the sentiment on each of the three social media platforms, how that sentiment shifted in the days that followed the ruling and the degree to which users delved into implications for the presidential contenders.
