OpenBrief
Log in Sign up
What the picker changes
  • Top topics digest — the cards score the selected period against the prior 4 weeks.
  • 12-week heatmap & outlet matrix — show the 12 weeks ending at the selected week (they slide back with the picker, they aren’t a fixed snapshot).
  • Per-topic volume / alias drift — same 12-week trailing window, anchored on the selected period.
  • Coverage gap quadrant — scores the selected period against the 12 weeks before it (not including it).
  • Anomaly cards — only show alerts the detector fired during the selected period. Quiet weeks legitimately show none.
What stays as-is
  • Outlet orientation strip / lean colours — context-only, drawn from the last 12 weeks of activity regardless.
  • Co-occurrence graph — recent-activity anchored, not picker-driven.
  • Source & topic profiles — all-time data for the topic; the picker doesn’t affect them.
Rolling 7 days is a sliding live window for “current vibes”; switch to Weekly to compare specific weeks side-by-side.
Week of 25 May 2026
This week
Press topic

Christchurch-Selwyn Amalgamation

4 articles · 4 aliases in press · peaked week of 17 May 2026 · first seen 8 May 2026

An opinion piece argues for the potential merger of Christchurch and Selwyn to improve local government efficiency, citing rising rates, inconsistent planning, and service delivery issues as key drivers for reform.

Coverage by outlet lean Methodology →

Stacked weekly counts; colour by editorial lean. Stuff and The Spinoff lean centre-left, NZ Herald centre-right, others centre.

Free Sign in free to see weekly press volume on this topic, stacked by editorial lean — the bias signal at a glance. Sign in free Log in

Alias drift

How press outlets have named this topic, week by week.

OpenBrief Pro Watch this topic — get alerted when framing shifts, when an MP adopts new language, or when discourse and press diverge. OpenBrief Pro · NZ$20/mo. See OpenBrief Pro Sign up free

Recent headlines

Most recent 4 articles linking to this topic.

Sample framings

Up to 12 framings spread across outlets. Each framing is the LLM's one-line characterisation of the article's editorial angle — not a quote.

odt Centre

integrated governance amid local resistance

MacDonald suggests tolling Selwyn, Waimakariri
4 Jun
rnz Centre

super city model under consideration

Mayor determined to protect district's identity as potential merger looms
24 May
OpenBrief Pro Watch this topic — get alerted when framing shifts, when an MP adopts new language, or when discourse and press diverge. OpenBrief Pro · NZ$20/mo. See OpenBrief Pro Sign up free

How the public reacted

Social-media signal on the same topic, drawn from the social lens. Engagement is likes + 2×shares + 3×replies, the same weighting used across the digest cards. View on /social →

Spotted something wrong on this page? Report a correction.