Podemos [wants to reform Spain's electoral system][p] to give the vote to 16-year olds, to try to force 50-50 male-female "zip" electoral lists to ensure gender parity at the ballot box, and to oblige candidates to take part in TV debates during the campaign. The suggestion that has received most media attention, though, is the way Pablo Iglesias's party wants to count votes and dish out seats in parliament between the parties. The proposed formula, known as Sainte-Laguë proportional representation, would be even less understood by ordinary voters than the current arcane version, the d'Hond...