Now, companies such as San Francisco-based Zignal Labs can mine data streams in real time from Twitter, Facebook, social video sites like YouTube and Vimeo, a few hundred thousand online news outlets and millions of blogs and transcripts. The data stream is then funneled into a single, instant information feed. When a candidate gives a stump speech or news breaks out, the new technology will almost instantaneously pinpoint how it’s playing across the media and social media spectrum.
Source: 2016’s campaign technology takes online tracking to new level – SiliconValley.com