1. The document discusses different voting methods and power indices for measuring voting power, including Condorcet's method, plurality voting, Shapley-Shubik index, and Banzhaf index. 2. Examples are provided to illustrate the Shapley-Shubik index and Banzhaf index, showing how voting power shares change under different decision rules for a 12-member and 15-member European Council. 3. The power indices behave differently, with the Banzhaf index of larger countries diminishing and smaller countries increasing as the decision rule increases for the 15-member Council.