DFP NYC Primary Polling Retrospective

As the results are reported from the first round of vote tallies by election officials in New York, Data for Progress outperformed every other pollster, with a lower error rate and more races polled than any other publicly released polls in the month of June.

Our root-mean-squared error (RMSE) was the lowest of the 13 polls we analyzed leading up to the New York City Democratic primary, across partisan and non-partisan pollsters. We calculated the RMSE by comparing results of the last poll for each pollster in June to the reported results by the New York City Board of Elections (lower values represent higher accuracy).

As we continually iterate and develop new polling techniques, we are confident that we will continue to be the most accurate pollster for Democratic primaries. Data for Progress was best-in-class during the 2020 primaries and general election, and has continued to poll policy issues and races in 2021 with leading accuracy. Read more about our lessons learned and new changes we’re making in our 2020 Polling Retrospective.