The Senate floor. In the Senate, Senators are assigned specific desks on their side of the main aisle. Republicans on the right. The practice of sitting on party sides of the main aisle dates back to approximately 1877. Desks are now shifted back and forth across the aisle to allow all the Senators of the same party to sit together.
Senators choose their desk location at the start of each new session in order of seniority.
The first seat in the first row on either side of the aisle is reserved for the Majority and Minority Leader, respectively. Since 1986, when the televising of Senate floor proceedings began, more Members have selected desk assignments with more favorable camera angles. Some Senators prefer locations of historical significance, or those located near the doors for an easier exit after a vote. The Senator who inherits it is expected to keep it stocked with candies for the benefit of his colleagues who reach into it for a treat when entering and exiting the chamber. Donations have been solicited from candy manufacturers to offset the cost, and Senators sometimes throw in a dollar or two to compensate the candy desk occupant for raiding his sugary stock.