We propose a multidimensional spatial model of political competition where the advertising campaign aims at influencing the weights that voters’ preferences assign to different political issues. The campaign strategies will move the vote of those voters who lack of partisan identification. The...

Voting procedures are known to be plagued with a variety of difficulties such as strategic voting, or where a voter is rewarded with a better election outcome by not voting, or where a winning candidate can lose by receiving more support. Once we know that these problems can occur, the next...

The voting situations at which the Borda rule or the Copeland method can be manipulated by a single voter or a coalition of voters in three-alternative elections are characterized. From these characterizations, we derive (when possible) some analytical representations measuring the vulnerability...