Given the weighted voting setup [𝑞;7,6,2] the quota 𝑞 must be between 8 (a bare majority of the votes) and 15 (all the votes, requiring unanimity to get anything done).
Calculate the Bahnzaf power index in this setup for the four values 𝑞=8,9,12,15 Compare these side-by-side. What happens to the power of the three voters as the quota changes? If you were voter C (with 2 votes) what would your favourite and least favourite values of the quota be? How about B and A