Iowa Code § 2.25: Joint conventions.

1. Joint conventions of the general assembly shall meet in the house of representatives for such purposes as are provided by law. The president of the senate, or, in the president’s absence, the president pro tempore of the senate shall preside at such joint conventions.

2. The speaker of the house of representatives may, for purposes of canvass of votes for governor and lieutenant governor and for the inauguration of such officers, designate any suitable hall at the seat of government as the hall of the house of representatives.