2024 President · Pennsylvania
InsiderAdvantage · fieldwork ended 2024-10-27 (9 days before the election) · 800 respondents · method not reported
The poll said
Democrat 47.4% · Republican 48.4%
R+1.0
The certified result
Democrat 48.66% · Republican 50.37%
R+1.7
The arithmetic
- Poll margin = 47.4 − 48.4 = -1.00
- Actual margin = 48.663 − 50.373 = -1.710
- Signed miss = -1.00 − (-1.710) = 0.710
- Absolute miss = |0.710| = 0.710
The poll overstated the Democrat by 0.7 points and had the right leader.
Where these numbers come from
Poll and result: 538 president_polls_historical.csv (archived 2025-03-06). Poll ID 88970, race ID 8872 (538 database).
population: lv