This follow-up tested two narrow questions left open by the initial Killin / Sinema overlap report:
11 exact shared donor names looked like the same people rather than common-name collisionsThe source package used retained FEC row detail for city/state/ZIP, employer, and occupation, then queried the official LDA REST API for 2025-2026 filings and lobbyist records.
The reconciliation materially strengthens the shared-donor finding. All 11 exact donor-name matches are assessed as either high-confidence or probable same-person matches from FEC row detail and, where available, LDA profile context.
High-confidence matches include Mary Beth Stanton, Stephen Neuman, Steven Elmendorf, Melanie Nathanson, Pamela Smith, Jeff Ziarko, and Andrew Vermilye. These matches generally have the same name plus matching employer / occupation and same or close ZIP-level geography.
Probable same-person matches include Bob Russell, Todd Webster, Barry LaSala, and Langston Emerson. These have enough employer, occupation, metro-area, or LDA context to make common-name collision less likely, but they still warrant careful labeling because employer or geography changed between the Sinema and Killin contribution rows.
This is not full legal identity proof. The pass did not perform full street-address, household, spouse, or biographical reconciliation.
The narrow LDA check produced one stronger intermediary bridge and several useful negative findings.
The strongest bridge is Steven Elmendorf / Avoq / Coinbase:
This makes Elmendorf the strongest source-grounded bridge found so far: shared individual donor, professional intermediary, and Coinbase digital-assets lobbying link.
Negative findings:
Kyrsten Sinema / Sinema as a lobbyist name in the queried lobbyist and 2025-2026 filing searches.10 shared donors as Coinbase lobbyists under the retained matching rules.The Elmendorf bridge has multiple source-grounded mechanisms:
The supported flows are narrower:
The evidence does not show coordination, influence, sponsorship, or a direct Sinema-Killin relationship. It also does not show that Sinema and Elmendorf interacted through Coinbase, that Sinema participated in lobbying, or that Killin had any relationship to Coinbase's Avoq engagement.
LDA no-result searches are meaningful but bounded. They show no matching public LDA filing under the queried fields; they do not rule out legal advice, non-lobbying advisory work, informal policy work, or contacts not requiring LDA disclosure.
Some high-volume donor-lobbyist searches retain first-page client samples plus filing counts rather than full client universes. The Coinbase-specific 2025-2026 checks were fully paginated for the queried set.