Please! no embarassing questions!
I doubt they would be stupid enough to try an earpiece. Someone who is mostly lucid could probably pull it out, but I don’t think his brain could get his mouth to speak what was being whispered in his ear fast enough and he would just end up sounding like a babbling idiot (and I’m mean much worse than he normally sounds). Either way it would be way too obvious and would completely turn off any independent voter.