How Vic group voting ticket system works

Group voting tickets and the deals done by so-called "preference whisperer" Glenn Druery have come under scrutiny following two minor parties publicly turning against him during the election campaign.

WHAT IS A GROUP VOTING TICKET?

* The Victorian Electoral Commission (VEC) defines a group voting ticket as "a statement on how each party or group gives preferences to candidates".

* During a state election, voters can either number a group above the line and preferences are then decided by the party they vote for.

* Alternatively, they can vote below the line by listing preferences for five or more individual candidates and retain control over preferences.

HOW IS IT DIFFERENT IN VICTORIA FROM OTHER JURISDICTIONS?

* Victoria is the only jurisdiction which has a group voting ticket system in its Legislative Council, also known as the upper house.

* The system was abolished in NSW, South Australia and Western Australia after being used in the Australian Senate from the 1984 federal election until the 2013 federal election.

* Tasmania has never used ticket voting.

HOW ARE CANDIDATES ELECTED?

* For a candidate to be elected to the upper house, they must achieve a quota of votes (1/6 of the total number of votes + 1).

WHY IS GROUP TICKET VOTING IN THE NEWS?

* On Monday, The Guardian revealed the Animal Justice Party abruptly changed their preferences in the Victorian Upper House after months of negotiations with Glenn Druery.

* A Twitter war has since erupted between the Victorian Animal Justice Party and Mr Druery.

* On Wednesday night, the Herald Sun published a damning video leaked by the Angry Victorians Party which appears to show Mr Druery boasting about rorting Victoria's voting system.