Labor leaders complain about problems with secret ballot procedures. Apparently they would know better than anyone. According to allegations from the Department of Labor, UFCW leaders have been wrecking the ballot system within their own union leadership elections:

The DOL charged substantial and numerous LMRDA violations, including: no secret balloting; ballot distribution and collection by staff at work sites; failure to account for hundreds of unused ballots and replacement ballots; denying ballots to eligible voters; discriminating in the use of the membership list; and using union and employer money to promote the incumbent slate.

Read the rest at the website of the Association for Union Democracy.