A highest-averages seat-allocation formula that divides each party's votes by 1, 3, 5, 7 and so on, producing results closer to exact proportionality than the D'Hondt method.
In more detail
Named after the French mathematician André Sainte-Laguë, the method treats large and small parties more evenly than D'Hondt. Scandinavian countries use a modified version in which the first divisor is raised to 1.4, making it slightly harder for very small parties to win their first seat. Germany and New Zealand use Sainte-Laguë to allocate list seats under mixed-member proportional representation. It is equivalent to the Webster method of apportionment.