Zack Polanski suffers heavy defeat in Holborn by-election, raising fresh questions about his future as Green leader - as ex-party MP fails to back him
Mr Polanski finished more than 3,000 votes behind Labour's Sagal Abdi-Wali in the seat vacated by Sir Keir Starmer to cap a torrid week for the Green leader.

Expanded Context
Brimstone Report is tracking this as a curated politics brief. The source report from Daily Mail says: Mr Polanski finished more than 3,000 votes behind Labour's Sagal Abdi-Wali in the seat vacated by Sir Keir Starmer to cap a torrid week for the Green leader.
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Key Facts
- Primary source: Daily Mail
- Published: Oct 9, 2026, 3:33 AM UTC
- Coverage area: Politics
- Brimstone role: curated summary, explanation, and source attribution
- Topic signals: developing story metadata
Timeline
- Source published: Oct 9, 2026, 3:33 AM UTC
- Brimstone indexed: Added to the curated Brimstone feed and linked to related coverage.
- Next update to watch: Additional sourcing, official confirmation, court or agency records, or follow-up reporting.
Source Attribution
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