Problem
Polling potential voters is a time-honored way of monitoring election campaigns. News reports often cite famous polls as favoring one candidate over another. However, with the advances in sentiment analysis, standard polling, which relies on survey questions, may be replaced as the preferred way to predict election results. search the web to find information on polling vs. sentiment analysis in political campaign prediction.
What are the pros/cons of each? Which is more accurate? Where are the various techniques being used?