# List of Tasmanian House of Assembly countbacks

This is a list of casual vacancies in the Tasmanian House of Assembly since 1965. Casual vacancies in the House of Assembly are filled by a countback of the votes of the departing member.
| Date | Electorate | Outgoing member | Party | Reason for vacancy | Incoming member | Party |
| 12 February 2025 | Lyons | Rebecca White | Labor | Resigned to contest the 2025 Australian federal election in the federal seat of Lyons | Casey Farrell | Labor |
| 4 October 2023 | Franklin | Elise Archer | Independent | Resigned as an Independent after quitting the Liberal Party a week earlier after being forced to resign as Minister | Simon Behrakis | Liberal |
| 13 July 2023 | Franklin | Cassy O'Connor | Greens | Resigned as Greens leader and in a successful bid for Legislative Council seat of Hobart at the 2024 periodic elections | Vica Bayley | Greens |
| 25 July 2022 | Franklin | Jacquie Petrusma | Liberal | Resigned | Dean Young | Liberal |
| 8 April 2022 | Bass | Peter Gutwein | Liberal | Resigned as Premier | Simon Wood | Liberal |
| 10 February 2022 | Bass | Sarah Courtney | Liberal | Resigned | Lara Alexander | Liberal |
| 14 March 2021 | Braddon | Adam Brooks | Liberal | Resigned | Felix Ellis | Liberal |
| 27 July 2020 | Braddon | Joan Rylah | Liberal | Resigned | Felix Ellis | Liberal |
| 20 January 2020 | Franklin | Will Hodgman | Liberal | Resigned as Premier | Nic Street | Liberal |
| 25 August 2019 | Clark | Scott Bacon | Labor | Resigned with his replacement quitting the Labor Party and entering Parliament as an Independent | Madeleine Ogilvie | Independent |
| 25 February 2019 | Lyons | Rene Hidding | Liberal | Resigned | John Tucker | Liberal |
| 12 February 2019 | Braddon | Adam Brooks | Liberal | Resigned | Joan Rylah | Liberal |
| 17 March 2017 | Braddon | Bryan Green | Labor | Resigned as opposition leader | Shane Broad | Labor |
| 3 March 2016 | Franklin | Paul Harriss | Liberal | Resigned | Nic Street | Liberal |
| 17 August 2015 | Franklin | Nick McKim | Greens | Resigned to accept Senate appointment | Rosalie Woodruff | Greens |
| 9 June 2015 | Bass | Kim Booth | Greens | Resigned as Greens leader | Andrea Dawkins | Greens |
| 26 May 2011 | Denison | David Bartlett | Labor | Resigned as Premier | Graeme Sturges | Labor |
| 9 February 2009 | Franklin | Paula Wriedt | Labor | Resigned after being dropped as Minister | Daniel Hulme | Labor |
| 28 July 2008 | Denison | Peg Putt | Greens | Resigned as Greens leader | Cassy O'Connor | Greens |
| 27 May 2008 | Franklin | Paul Lennon | Labor | Resigned as Premier | Ross Butler | Labor |
| 10 May 2005 | Lyons | Ken Bacon | Labor | Resigned as Minister | Heather Butler | Labor |
| 1 April 2004 | Denison | Jim Bacon | Labor | Resigned as Premier due to ill health | David Bartlett | Labor |
| 22 April 2002 | Franklin | Fran Bladel | Labor | Resigned in unsuccessful bid for Legislative Council seat of Huon at 2002 periodic elections | Neville Oliver | Labor |
| 19 October 2001 | Franklin | Peter Hodgman | Liberal | Resigned in unsuccessful bid for Franklin at the 2001 federal election | Martin McManus | Liberal |
| 21 August 2001 | Denison | Ray Groom | Liberal | Resigned | Michael Hodgman | Liberal |
| 14 March 2000 | Bass | Frank Madill | Liberal | Resigned due to ill health | David Fry | Liberal |
| 15 July 1997 | Braddon | Michael Field | Labor | Resigned | Mike Gard | Labor |
| 15 July 1997 | Braddon | Roger Groom | Liberal | Resigned | Carole Cains | Liberal |
| 15 December 1995 | Lyons | Robin Gray | Liberal | Resigned | Denise Swan | Liberal |
| 15 May 1995 | Franklin | Gerry Bates | Greens | Resigned in unsuccessful bid for Legislative Council seat of Queenborough at the 1995 periodic elections | Mike Foley | Greens |
| 10 April 1995 | Franklin | Michael Aird | Labor | Resigned in successful bid for Legislative Council seat of Derwent at the 1995 periodic elections | John Sheppard | Labor |
| 26 February 1993 | Denison | Bob Brown | Greens | Resigned | Peg Putt | Greens |
| 15 October 1990 | Franklin | Ken Wriedt | Labor | Resigned | Paul Lennon | Labor |
| 6 August 1990 | Franklin | Nick Evers | Liberal | Resigned | Brian Davison | Liberal |
| 15 February 1990 | Denison | John Bennett | Liberal | Resigned | Chris Gibson | Liberal |
| 14 November 1988 | Franklin | Geoff Pearsall | Liberal | Resigned | John Cleary | Liberal |
| 29 September 1987 | Denison | Geoff Davis | Liberal | Resigned | John Barker | Liberal |
| 14 July 1987 | Lyons | Darrel Baldock | Labor | Resigned to return to football coaching | Chris Batt | Labor |
| 10 August 1984 | Bass | Michael Barnard | Labor | Resigned | Peter Patmore | Labor |
| 25 June 1984 | Denison | John Devine | Labor | Resigned | Bob Graham | Labor |
| 25 June 1984 | Denison | Max Bingham | Liberal | Resigned | Carmel Holmes | Liberal |
| 4 January 1983 | Denison | Norm Sanders | Democrat | Resigned | Bob Brown | Green Independents |
| 8 September 1980 | Denison | Neil Batt | Labor | Resigned | Bob Graham | Labor |
| 28 September 1979 | Franklin | Eric Barnard | Labor | Resigned | Bill McKinnon | Labor |
| 12 December 1977 | Franklin | Bill Neilson | Labor | Resigned | Bill McKinnon | Labor |
| 10 July 1975 | Wilmot | Angus Bethune | Liberal | Resigned | Ian Braid | Liberal |
| 16 May 1975 | Braddon | Lloyd Costello | Labor | Resigned | John Coughlan | Labor |
| 12 April 1975 | Braddon | Eric Reece | Labor | Resigned | Joseph Britton | Labor |
| 17 August 1974 | Denison | Kevin Corby | Labor | Resigned | John Green | Labor |
| 26 July 1974 | Wilmot | Roy Fagan | Labor | Resigned | Charles Batt | Labor |
| 26 July 1974 | Bass | Allan Foster | Labor | Resigned | Harry Holgate | Labor |
| 27 April 1974 | Denison | Merv Everett | Labor | Resigned in successful bid for the Australian Senate at the 1974 federal election | Ian Cole | Labor |
| 25 October 1968 | Bass | John Steer | Liberal | Died in office | James Henty | Liberal |
| 27 October 1966 | Franklin | Thomas Pearsall | Liberal | Resigned in successful bid for seat of Franklin at the 1966 federal election | Eric Iles | Liberal |
| 10 July 1965 | Denison | Rex Townley | Liberal | Resigned | George Deas Brown | Liberal |