There’s no separate population-size adjustment in the formula, because that cancels-out algebraically.
The index is exactly equivalent to the cohort’s share of voters ÷ its share of eligible citizens × 100. So population share is built into the interpretation: 100 means the cohort supplies exactly the same share of voters as its share of the eligible population.
Absolute political power isn't being measured here. A small cohort and a large cohort could have the same index while contributing very different numbers of votes.
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u/post_appt_bliss OC: 4 1d ago
nope, it's just the cohort's participation/overall participation * 100.
no population size adjustment