Fig 6. Coalitions between political groups in terms of RCVs as measured by Krippendorff’s Alpha.

For nine groups, there are 36 pairs for which we measure their (dis)agreement. Positive values of Alpha indicate co-voting agreement, negative values correspond to systematic disagreement, while Alpha = 0 indicates co-voting by chance. The average Alpha across all 36 pairs is 0.02, close to co-voting by chance. Note, however, that Alpha considers just yes/no votes, and ignores abstentions.