  An unconditionally secure authority-certified anonymous quantum key
distribution scheme using conjugate coding is presented, base on which we
construct a quantum election scheme without the help of entanglement state. We
show that this election scheme ensures the completeness, soundness, privacy,
eligibility, unreusability, fairness and verifiability of a large-scale
election in which the administrator and counter are semi-honest. This election
scheme can work even if there exist loss and errors in quantum channels. In
addition, any irregularity in this scheme is sensible.
