05_Ranked_Robin / 02_Examples — the worked intro¶
This folder holds the two starting cases — the intro election, taught on the Ranked Robin front door, and the tiny ballot-reading case behind a blank is ranked last. In the intro election the consensus candidate that plurality overlooks wins the round-robin outright, because RR compares every pair head-to-head instead of counting only first choices. Its walkthrough lives on the front door (ballots, every matchup, the Copeland record, and the honest RCV-IRV footnote); here are the runnable files and their full reports.
| Case (page) | What it shows | src |
|---|---|---|
| the consensus center wins | RR elects the broadly-preferred center (3–0 head-to-head) over the two poles that hold more first choices | .yaml |
| a blank is ranked last | RR reads only the preference order, never the rank number: a candidate ranked explicitly last and the same candidate left blank count identically (Dan loses every matchup 3–0 either way) | .yaml |
| the smallest round-robin | 3 candidates, 7 ballots — the first-choice leader (Ada, 3 of 7) finishes last and Ben wins 2–0; small enough that the whole report fits on a screen, which is why the lesson embeds it rather than pasting one | .yaml |
Up: 05_Ranked_Robin — Ranked Robin (RCV-RR / Copeland) · the method taught: Ranked Robin (RCV-RR) · where RR and IRV genuinely part ways: rr_vs_irv_plurality (the Tennessee center squeeze)