sleepover
n.— «A poll worker, election official, technician, or other person who had private access to a machine for as little as one minute could use these methods without detection. Poll workers often do have such access; for instance, in a widespread practice called “sleepovers,” machines are sent home with poll workers the night before the election.» —“How To Steal The Next Election Using The Diebold AccuVote-TS Voting Machine, Or Others Like It” by Bill McGinnis OpEdNews.com Sept. 14, 2006. (source: Double-Tongued Dictionary)