Manipulation of the Borda rule by introduction of a similar candidate
Résumé
In an election contest, a losing candidate a can manipulate the election outcome in his favor by introducing a weak similar candidate WSC in the choice set, the WSC b being defined as an alternative which is ranked immediatly below a in the individual preferences. We characterize the voting situations where this manipulation is efficient for the Borda rule and express its vulnerability for a 3 alternative election.