Anticipating a confrontation, legislators began to stake claims to key physical positions on the stage of the Legislative Palace in the days leading to December 1. On Tuesday, November 28, 2006, the members of the lower Chamber engaged in a confrontation as members of Calderón's PAN and López Obrador's PRD shoved each other off the stage. Later in the week, the impasse appeared to take a less hostile tone. As Fox's term came to an end at midnight on Thursday night, he held an unprecedented and largely symbolic ceremony in which he handed the presidential sash and presidential residence over to Calderón.