By Jim Ellis
July 5, 2016 — Often, people want to know which are the most accurate pollsters within the huge volume of data being released into the political marketplace. Bloomberg Politics reviewed the 2016 presidential pollsters who routinely release their numbers into the public domain and publicized their ratings late last week. They isolated a dozen polling firms and corresponding media organizations that picked the presidential primary winner in at least 70 percent of their studies. Polling frequency and reliability stats were also recorded.
The firm projecting the primary winner most often — 95 percent of the time — was Gravis Marketing, which conducted 19 surveys in 12 different states. The students who comprise the Emerson College Polling Society in Massachusetts, who have fared very well in previous performance review studies despite being amateurs, placed a close second in win predictability, proving correct 94 percent of the time. They polled 16 times in eight states. Completing the top five are Opinion Savvy (91 percent winner accuracy; 11 polls; eight states), NBC/Wall Street Journal/Marist College (90 percent winner accuracy; 29 polls; 15 states), and the Survey Monkey (90 percent winner accuracy; 10 polls; eight states).
But capturing the correct victory margin proved to be another story for all 12 pollsters. None of them came within the average polling error margin pertaining to victory spread projection in relation to their cumulative polling average.