Inland Empire Media Bias Scorecard · one of 10 outlets scored
San Bernardino Sun Media Bias & Reporting Quality
San Bernardino Sun shows a near-zero net lean on party politics, at a partisan lean of 0. On worldview it shows a near-zero net lean, at an ideological lean of 0.4. The panel found no partisan lean at all in 23 of its 26 scored articles.
San Bernardino Sun is one of 10 outlets on the Inland Empire Media Bias Scorecard. A panel of three AI models, from three different companies, scored those 26 articles under rubric v0.4.0, with every outlet name and byline removed. Data as of . The numbers move as the sample grows.
What the results mean#
- Above the board median on source independence (1.9 against 1.7), analysis labeling (3.9 against 3.8).
- Below the board median on evidence fairness (2.5 against 2.6).
- Ideological tilt nets near zero (0.4) with strength 0.9: its articles lean both ways and cancel.
- Institutional posture nets near zero (-0.1) with strength 0.8: its articles lean both ways and cancel.
- Establishment-populist framing nets near zero (-0.2) with strength 0.8: its articles lean both ways and cancel.
- Conservation-development framing rests on 4 articles, too few to read.
These describe the sampled articles, not every story San Bernardino Sun publishes. Labels such as near-zero net lean are cutoffs on the number beside them, not statistical tests.
Its fingerprint#
Five lean axes, on the same -3 to +3 scale every outlet is drawn on. The marker is the net lean. The pale band spans the average swing per article in both directions.
Where it sits among the Inland Empire's outlets#
~1.7 local articles/day · 26 scored
How to read this: left and right is ideological tilt. This market's outlets sit close together, so the map shows lean from -2 to +2 of the full -3 to +3 scale. Zoomed in, small gaps look large: each outlet's lean is averaged over 12 to 83 scored articles, so a gap of a few tenths may not hold as more are scored. Up is source independence, meaning official claims are tested rather than passed along. Bubble size is local articles per day: publishing volume, not audience reach. Dashed outlines mark the known-lean control and the out-of-market reference. The moose marks our own newsroom. Hover or tap any bubble to spotlight it and see its exact numbers. Tap again or click away to release it.
Its scores beside the board#
| Dimension | San Bernardino Sun | Board median |
|---|---|---|
| Partisan lean (-3 Democratic to +3 Republican) | 0 (near-zero net lean) | 0 (near-zero net lean) |
| Partisan lean strength (0-3, direction ignored) | 0.1 | 0.2 |
| Articles with no partisan lean detected | 23 of 26 | - |
| Ideological tilt (-3 progressive to +3 conservative) | 0.4 net, 0.9 strength (n=15) | -0.1 net, 0.6 strength |
| Institutional posture (-3 deference to +3 skepticism) | -0.1 net, 0.8 strength (n=15) | -0.7 net, 0.8 strength |
| Establishment-populist framing (-3 establishment to +3 populist) | -0.2 net, 0.8 strength (n=14) | -0.4 net, 0.8 strength |
| Conservation-development framing (-3 conservation to +3 development) | 0.9 net, 1.4 strength (n=4, too few to read) | -0.5 net, 1 strength |
| Evidence fairness (0-4) | 2.5 | 2.6 |
| Sourcing (0-4) | 2 | 2 |
| Source independence (0-4) | 1.9 | 1.7 |
| Analysis labeling (0-4) | 3.9 | 3.8 |
| Language neutrality (0-4) | 3.4 | 3.4 |
| Articles sampled | 26 | - |
Same story, side by side#
No matched same-story comparison for San Bernardino Sun in this dataset yet.
Coverage and volume#
San Bernardino Sun publishes about 1.7 local stories a day. Of 50 articles read for places, 17 are set in an Inland Empire community, 6 are statewide, 20 are about places outside the Inland Empire and 7 name no place. Most covered: Inland Empire (5), Riverside (3), Rancho Cucamonga (2), Redlands (1), Corona (1), Fontana (1).
Machine access#
This shows how San Bernardino Sun's site answers software, not whether a person can read it. These are facts about how San Bernardino Sun publishes, not scores. Blocking AI crawlers is a legitimate choice. When our crawler could not complete a check, the table says why.
| Paywall | RSS | Full-text RSS | AI crawlers blocked | Readable without JS |
|---|---|---|---|---|
| metered | unreachable from our collection point (HTTP 403) | no | 13 | yes |
Why it is on the board#
San Bernardino County's daily newspaper (it styles itself The Sun).
Articles read through a web browser since , on a volunteer's home connection, because our crawler is refused. Its feed refuses our crawler and a real browser alike (checked Oct. 26, 2026), so a real browser reads its news section page. Last read .
Reach context:
How this is measured#
Three models from three vendors score each article against a published rubric, with outlet names and bylines removed first. An outlet's number is the mean of its per-article panel medians. Lean measures direction only, never quality. The full method, its validation checks and every outlet's numbers are on the Inland Empire Media Bias Scorecard. The data is free to reuse with credit, under CC BY 4.0.
The other outlets on the board#
IE Community News · KESQ News Channel 3 · Coachella Valley Independent · The Riverside Record · Uken Report · The Press-Enterprise · Inland Valley Daily Bulletin · Black Voice News · Victor Valley News
Back to the Inland Empire Media Bias Scorecard · Coverage map