Read blogs. Newspapers. Trade magazines. Books. Interview transcripts. Financial filings. … You should read broadly ‐‐ from people who come from different backgrounds and different sides of the political argument. You should read critically. Don’t assume that someone is right just because they have a big credential attached. There have been a number of studies ‐‐ including some I’ve conducted myself ‐‐ which have demonstrated that a group of four political pundits is often no more insightful than a barbershop quartet. A high percentage of what passes for news is really just filler. But definitely spend a lot of time reading. Don’t feel guilty if you spend the first 90 minutes of your day drinking coffee and reading blogs ‐‐ it’s your job. Your ratio of reading to writing should be high.
— Nate Silver spoke at the Columbia Graduate School of Journalism and delivered pearls of statistically-viable wisdom. The entire thing is worth reading.