Although this double-majority voting system for the EBA sounds boringly procedural, it could prove to be very significant.

BBC: Eurozone banking union that works for Britain?

Because, under Germany's system of proportional representation, the Greens got 47 parliamentary seats, but under France's majority-voting system its Greens, the main environmental party, got a mere half-dozen.

ECONOMIST: France

The Council of Ministers uses a system of weighted qualified-majority voting in which small countries are heavily over-represented.

ECONOMIST: By the esoteric art of treaty revision