Pollster · 94 of 1053

Suffolk University

GRADE A+ NEUTRAL LEAN ★ AAPOR TI MEMBER
↗ official site ↗ Wikipedia ↗ AAPOR profile
Polls scored
140
Mean error
2.8 pt
Signed bias
D+0.15
Aggregation weight
1.44
Composite quality score
0–100 · weighted of 6 components
73
of 100 · tier · strong

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

Aggregator weight 72
Verification rate 44
Sample size median 54
Citation rate 100
Outlier rate (inv.) 100
Rater alignment 94
Pollster vs editorial consensus
aligned

Across 55 graded races, Suffolk University's released topline differed from the median editorial-rater consensus by an average of +0.8pp. That's well-aligned with the consensus — useful as a sanity check, less useful as a contrarian signal.

Mean delta
+0.8pp
Median delta
+0.0pp
Std-dev
5.3pp
N graded
55
Sample races (links to detail):
us-senate-2026-maus-senate-2026-maus-senate-2024-az
Recent activity
Total all time
140
Last 30d
0
Last 90d
0
Last 180d
2

Last poll 11/23/2025 (167d ago) · status slow

Per-cycle debrief appearances
Cycle Rank Polls MAE Signed bias
2024 #6 / 26 3 2.01 pt D+2.01 pp
2022 #5 / 36 3 1.55 pt R+0.39 pp
2018 #5 / 25 4 2.80 pt R+1.04 pp
2014 #8 / 21 3 3.87 pt R+0.72 pp
Recent polls