I heard a clip from a rally yesterday and his voice sounded hoarse. He may be trying to take it easy to prevent him from losing his voice altogether OR the hoarseness could be the result of a cold.
Either way, he should be back to full strength once he gets a little rest and has some attention by a physician.
I hope that is all it is and he isn’t used to speaking so much either. He must be so pumped up and that is exhausting.
He can eat some of his mama’s cooking and spring right back!