2020 President · national
Data for Progress · fieldwork ended 2020-10-20 (14 days before the election) · 811 respondents · Online Panel
The poll said
Democrat 53.88% · Republican 43.69%
D+10.2
The certified result
Democrat 51.07% · Republican 46.67%
D+4.4
The arithmetic
- Poll margin = 53.88 − 43.69 = 10.19
- Actual margin = 51.068 − 46.672 = 4.396
- Signed miss = 10.19 − (4.396) = 5.794
- Absolute miss = |5.794| = 5.794
The poll overstated the Democrat by 5.8 points and had the right leader.
Where these numbers come from
Poll and result: 538 raw_polls.csv. Poll ID 71742, race ID 6210 (538 database).