Observed arrival · 2026-09-06
Left Sentinel: an early-warning desk for political ad buys
A beta monitoring service that tracks broadcast, cable, radio, digital political ads, and independent-expenditure filings for campaign teams.
Field notes
The page separates a one-race Tracker from an invitation-only War Room. Tracker users are promised a daily digest, alerts for unfamiliar sponsors, and links to each public source; the larger version adds analyst memos, a claim ledger, media-market views, exports, and campaign workspaces. The listed record types span FCC political orders, digital ad libraries from Meta, Google, and Snap, federal independent expenditures, and state disclosures. The site says Kansas is its first 2026 focus, but the homepage does not show an actual monitored race or alert.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
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