Pollster · 94 of 1769

Suffolk University

GRADE CWEIGHT TIER T3NEUTRAL LEAN★ AAPOR TI MEMBER</> Embed

↗ official site ↗ Wikipedia ↗ AAPOR profile

Polls scored

Mean error

4.8 pt

Signed bias

D+1.53

Aggregation weight

1.05

Pollster vs prediction market

From 255 race-polls · 10 matched markets

Pre-poll P(D) (avg)

95.2%

Market price the day before each poll dropped

Post-poll market shift

0.0 pt

Average move within 24h of release (D+ = market moved toward D)

Market alignment

+18.1 pt

Net direction markets moved toward Suffolk University's read

Composite quality score

0–100 · weighted of 5 measured components

of 100 · tier · moderate

Moderate quality. Worth checking individual signals before relying on this pollster's headline.

Aggregator weight53

Verification rate29

Sample size median53

Citation rate69

Outlier rate (inv.)not yet measured

Rater alignment94

Pollster vs editorial consensus

aligned

Across 63 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

5.0pp

N graded

Sample races (links to detail):

us-senate-2026-ma us-senate-2026-ma us-senate-2024-az

Recent activity

Total all time

255

Last 30d

Last 90d

Last 180d

Last poll 6/15/2026 (21d ago)· status active

Per-cycle debrief appearances

Cycle	Rank	Polls	MAE	Signed bias
2024	#6 / 26	3	2.01 pt	D+2.01 pp
2022	#6 / 36	4	1.85 pt	R+0.98 pp
2018	#5 / 25	4	2.80 pt	R+1.04 pp
2014	#8 / 21	3	3.87 pt	R+0.72 pp
2010	#20 / 21	4	7.14 pt	D+4.69 pp

Recent polls