D
- Death of a candidate for direct election
 - Death of a voter
 - Declaration of consent to being nominated
 - Deferred election
 - Democracy
 - Deprivation of the right to vote
 - Deputies
 - Destruction of electoral documents
 - Disabled voters
 - Disqualification from voting
 - Distribution of seats
 - Distribution of seats according to d’Hondt
 - Distribution of seats according to maximum numbers
 - Distribution of seats according to the Niemeyer system