Pollster · 496 of 1053

Reuters/Ipsos

GRADE A NEUTRAL LEAN ★ AAPOR TI MEMBER
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Polls scored
7
Mean error
3.3 pt
Signed bias
D+0.57
Aggregation weight
1.21
Composite quality score
0–100 · weighted of 6 components
71
of 100 · tier · low-volume

Strong on the components we measure; one or two areas pull the composite below the elite threshold.

Aggregator weight 60
Verification rate 43
Sample size median 78
Citation rate 100
Outlier rate (inv.) 100
Rater alignment 82
Pollster vs editorial consensus
d-lean

Across 7 graded races, Reuters/Ipsos's released topline differed from the median editorial-rater consensus by an average of +2.4pp. That's a measurable D-lean vs the consensus.

Mean delta
+2.4pp
Median delta
+2.0pp
Std-dev
1.5pp
N graded
7
Sample races (links to detail):
us-senate-2020-mius-senate-2020-mius-senate-2020-mi
Recent activity
Total all time
7
Last 30d
0
Last 90d
0
Last 180d
0

Last poll 10/20/2020 (2027d ago) · status dormant

Per-cycle debrief appearances
Cycle Rank Polls MAE Signed bias
2012 #3 / 12 3 2.97 pt R+1.64 pp
Recent polls