My prediction for the debate: they will check for earbuds. Hitlary will not have any. The first sign of trouble she will start coughing and ask help from one of her team. They will come up give her something and the earbud. Then from there Hitlary will place the earbud in and no coughing will ensue thereafter unless the earbud is noticeable and the process will repeat.
Maybe she doesn’t need an earbud anymore. Maybe during her ‘rest’ at home she had a receiver placed under the skin near her ear, with an antenna hidden in her hair.