Joint ballot
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In parliamentary practice, a joint ballot is an election or vote by ballot participated in by the members of bath houses of a legislative assembly sitting together as one body, the result being determined by a majority of the votes cast by the joint assembly thus constituted, instead of by concurrent majorities of the two houses.
See State v. Shaw, 9 S. C. 144.