This is a feature request with urgency for use during Backdrop 10th year celebrations.
It is something like, https://forum.backdropcms.org/feature-requests, a node with a view of features and options to vote.
In this case a node, Contest name, with a view of contest entry (posts) with options to add an entry and to vote on any.
Would this be done as a taxonomy term Contest name and view of entries tagged with the term?
Or is some other way better?