In addition, possible run multiple units with battery backups within a sound proof room. The amount of power the units my draw possibly could impact the power grid.

Battery backups, no explanation needed, see above.

Sound proof room, this is a must. The amount of sound being produced by the recording devices may drown out candidates.

Definitely would need a separate and independent cooling system. Only a IS systems operator at the IRS may be able to relate.

Possibly a redundant off site system. In case of extreme heat produced and possibility of fire.

Just my first thoughts of a lie detector system in any political debate in which Trump were to be involved.