His death in 1861 triggered a by-election.

He died in 1905 while in office, triggering a by-election that was won by his son.

The death of Audrey Wise in 2000 triggered a by-election.

He held the position until 21 July 2005, when he resigned his seat, triggering a by-election.

This triggered a by-election, to be held May 7, 2013.

This triggered a by-election that took place on 30 September 2004.

His resignation triggered a by-election in the seat of Mayo.

His death triggered a by-election for the vacant seat.

Smith's death in August 1951 at the age of 42 did not trigger a by-election.

This triggered a by-election in the seat of Niddrie.