MEP Similarity
similarityv1.0Published: 2026-05-01Current versionHow often two MEPs cast the same expressed position across votes where both were present.
Formula
similarity = same_position_votes / comparable_expressed_votesIncluded in the calculation
Votes where both MEPs cast For, Against or Abstain.
Excluded from the calculation
Votes where either MEP was absent. Votes outside the overlapping mandate of both MEPs.
Limitations
Similarity does not imply political agreement on substance — two MEPs can vote the same way for opposite reasons. It also does not weigh the political importance of individual votes.
Implementation: open source under MIT. The calculation logic lives in the project repository under pipelines/.