There are over 1 million candidates for national exam this year. By conservative estimates and assuming these are from 500K homesteads with minimum 2 votes each, and assume rao core base has half of these, then he has just lost no less than 500K votes - by antagonizing the candidates.
Everyone knows KCSE starts on 23rd oct, and security apparatus need a clear week to organize themselves. As for KCPE - no parent would accept we hold exams when tallying is ongoing, this will destabilize the pupils. Gentlemen, Rao has just lost so many votes, so good at self cannibalism, but this is good IMHO