The absence of teleprompters for Obama must be compensated for. The US intel agencies are bound to have tiny little devices which could be inserted in Obama's ear, a tooth, or the throat near the eustachian tube that will allow Obama to be coached before he responds. The Republicans, if they are wise, will have radio frequency jamming devices operating near Obama in the next debate. A really high power pulsed frequency swept radiated signal may even blow the device up and draw a startled reaction from the candidate. I am sure you have heard of the people who hear music in the fillings in their teeth. Conspiracy, huh.
This is mumblings from a retired electronics engineer who worked with radar, inertial guidance, and control systems.