vote mob

vote +‎ mob, by analogy with flash mob.

vote mob (plural vote mobs)

1. (Canada) A gathering of usually young people assembled for the purpose of voting in an election or encouraging youth participation in it and often organized through social media. [2011]
   • 2011 April 22, Michael Taube, “Vote mob mentality”, in Ottawa Citizen‎, archived from the original on 27 April 2011:

     At the University of Guelph, some students took Mercer's rant rather seriously. They used the concept of flash mobs […] and created vote mobs. […] In particular, the event has also been called a "surprise party," as evidenced by a You-Tube video in which a vote mob comes out of the woods and rolls out a banner that reads, "Surprise! We are voting!"