"Compared with 2002, the percentage of full-time U.S. journalists who claim to be Democrats has dropped 8 percentage points in 2013 to about 28 percent, moving this figure closer to the overall population percentage of 30 percent, according to a December 12-15, 2013, ABC News/Washington Post national poll of 1,005 adults. This is the lowest percentage of journalists saying they are Democrats since 1971. An even larger drop was observed among journalists who said they were Republicans in 2013 (7.1 percent) than in 2002 (18 percent), but the 2013 figure is still notably lower than the percentage of U.S. adults who identified with the Republican Party (24 percent according to the poll mentioned above)."
(https://www.washingtonpost.com/news/the-fix/wp/2014/05/06/ju...)
"Some of the professional groups have clear liberal leanings. People who work in the news media are almost exclusively donors to liberal candidates:"
(https://www.businessinsider.com/charts-show-the-political-bi...)