Union syndicale des magistrats

The Union syndicale des magistrats, commonly abbreviated as USM, is the French largest (and majoritarian) magistrates trade union – both in terms of membership (roughly 2,000 out of 8,000 magistrates) and support in professional elections (68% of the vote in the 2013 trade union elections).

The USM claims to be apolitical, contrary to the Syndicat de la Magistrature (SM), the second-largest union, that often expresses strong left-wing views and opposition to conservative policies.