29 CFR §452.110

1. (a)In addition to the election safeguards discussed in this part, the Act contains a general mandate in section 401(c), that adequate safeguards to insure a fair election shall be provided. Such safeguards are not required to be included in the union's constitution and bylaws, but they must be observed. A labor organization's wide range of discretion regarding the conduct of elections is thus circumscribed by a general rule of fairness. For example, if one candidate is permitted to have his nickname appear on the ballot, his opponent should enjoy the same privilege.
2. (b)A union's failure to provide voters with adequate instructions for properly casting their ballots may violate the requirement of adequate safeguards to insure a fair election.