Right after the last election, I heard a lot about how the polls had gotten it wrong. That's just not true. While some polls were wrong, most of the more respected polls were very accurate.
The respected polling analysts at FiveThirtyEight.com looked at all of the many polls. They gave the following 21 polls an A rating for their very accurate predictions:
SurveyUSA..........A+
Public Policy Polling..........A-
Mason-Dixon Polling..........A-
Emerson College..........A-
Quinnipiac University..........A-
Marist College..........A
Monmouth University..........A
Suffolk University..........A-
New York Times / Siena College..........A+
ABC News / Washington Post..........A
CBS News / New York Times..........A-
Siena College..........A
Beacon Research..........A
Selzer & Co...........A+
Research and Polling, Inc...........A+
Landmark Communications..........A
Cygnal..........A
Muhlenburg College..........A
University of Massachusetts..........A-
TIPP Insights..........A-
AtlasIntel..........A