Partner swaps and score deltas
Non-primary pro dances run -0.166 vs primary across 51 multi-pro celeb-seasons.
Ballroom Data · Artometrics-style report · Nov 3, 2026 (America/Los_Angeles)
Headline
In 51 celeb-seasons with more than one pro on the card, dances with a non-primary pro score -0.166 points lower on average than dances with the primary partner. Switch-Up-themed rows in the theme field: 52.
Methods & caveats
Primary pro = most frequent partner that season. Trio/Switch nights and injury substitutes both appear; we do not manually classify reason codes.
Coverage: seasons 1–35; 3,602 performances; 11,027 individual judge marks in the cleaned Ballroom Data SQLite build (Nov 3, 2026, America/Los_Angeles).
Known gaps: Season 31 Mirrorball winner is not tagged as Winners in the performance table (Charli D’Amelio / Mark Ballas is missing from our winners extract). Seasons 33–35 largely lack Kaggle ages/hometowns. Season 35 celebrity names in the wiki scrape are often first-name-only or garbled. Dance-style strings still include some unclean variants. We never impute missing values.
Sources: howisonlab/dwts_dataset (GitHub); Kaggle brupley/dancing-with-the-stars-dataset (CC BY-SA 4.0); Wikipedia DWTS season pages for seasons 32–35 (CC BY-SA 4.0). Scores are per-judge means on a 0–10 scale so 3-judge and 4-judge weeks are comparable. Marathons/relays/megamixes are excluded from style averages unless noted.
Disclaimer: Unofficial fan analysis. Not affiliated with BBC Worldwide, Disney, or ABC.
Downloads
Quarto source, rendered report, chart exports (PNG/SVG), and the analysis CSV.
