Assermentation: A solemn promise made before taking on a governmental or judicial role, ie swearing in.
As seen in: « L’autobus de campagne n’est peut-être pas encore sorti du garage, mais le premier ministre Jean Charest a prononcé un discours à forte saveur électorale mercredi, lors de la cérémonie d’assermentation de son nouveau député de LaFontaine, Marc Tanguay. »
(Translation: “The campaign bus may still be in the garage, but Premier Jean Charest gave a speech with strong electoral leanings Wednesday, during the swearing-in ceremony of his new MNA for LaFontaine, Marc Tanguay.”)