47

Chuck Grassley

U.S. Senator · Iowa · Republican · Roster snapshot 2026-03-28
Serving in office Scheduled research active Main board
The signal is improving, but the lifetime record is still thin.

This profile keeps a lifetime office and promise record. The trust score is designed to stay close to 50 until enough claims and evidence are reviewed.

Breakdown

  • Delivered during the term promised: 5 x 1.0
  • Delivered in a later elected term: 0 x 0.8
  • Partial delivery: 9 x 0.4
  • Never delivered: 5 x 0.0
  • Disputed claims tracked separately: 0
  • Reviewed promises in current record: 19
  • Confidence: 61%
  • Current claim count: 23
  • Current evidence count: 118

Open claims and evidence

Office History

  • U.S. Senator
    Iowa · current
    Federal elected office. Current Senate term runs to January 3, 2029, per the official House History biography.
  • U.S. Senator
    Iowa · current
    Historical elected offices still need research.
  • U.S. Representative
    Iowa's 3rd congressional district
    Federal elected office. Grassley was elected to the U.S. House in 1974 and served three Congresses before running for the U.S. Senate in 1980.

Claims

Open full claims and evidence page

Method note

Long term, this app should score against a manually reviewed promise ledger that spans every elected office the candidate has held. The current model uses a Bayesian-style shrinkage step: thin records are pulled back toward 50 so the UI does not overstate certainty.

Claim occurrences, evidence, and future AI adjudications are all designed to store provider and model provenance. Formula version: 0.1.0.