Template:43rd Canada Senate membership change
| Date | Name | Province | Affiliation before | Affiliation after | Reason | ||
|---|---|---|---|---|---|---|---|
| October 21, 2019 | André Pratte | Quebec (De Salaberry) | Independent Senators Group | vacant | Resigned | ||
| November 2, 2019 | Paul McIntyre | New Brunswick | Conservative | vacant | Mandatory retirement | ||
| November 4, 2019 | Doug Black | Alberta | Independent Senators Group | Canadian Senators Group | Joined new caucus group | ||
| Robert Black | Ontario (Centre Wellington) | ||||||
| Larry Campbell | British Columbia (Vancouver) | ||||||
| Stephen Greene | Nova Scotia (Halifax — The Citadel) | ||||||
| Diane Griffin | Prince Edward Island | ||||||
| Elaine McCoy | Alberta (Calgary) | ||||||
| Josée Verner | Quebec (Montarville) | ||||||
| David Adams Richards | New Brunswick | Non-affiliated | |||||
| Scott Tannas | Alberta | Conservative | |||||
| Pamela Wallin | Saskatchewan | ||||||
| Vernon White | Ontario | ||||||
| November 6, 2019 | Richard Neufeld | British Columbia | Conservative | vacant | Mandatory retirement | ||
| November 7, 2019 | Diane Bellemare | Quebec (Alma) | Non-affiliated | Independent Senators Group | Changed affiliation | ||
| November 14, 2019 | Jane Cordy | Nova Scotia | Senate Liberal Caucus | Progressive Senate Group | Joined new caucus group | ||
| Dennis Dawson | Quebec (Lauzon) | ||||||
| Joseph A. Day | New Brunswick (Saint John-Kennebecasis) | ||||||
| Percy Downe | Prince Edward Island (Charlottetown) | ||||||
| Lillian Dyck | Saskatchewan (North Battleford) | ||||||
| Serge Joyal | Quebec (Kennebec) | ||||||
| Sandra Lovelace Nicholas | New Brunswick | ||||||
| Terry Mercer | Nova Scotia (Northend Halifax) | ||||||
| Jim Munson | Ontario (Ottawa/Rideau Canal) | ||||||
| November 18, 2019 | Percy Downe | Prince Edward Island (Charlottetown) | Progressive Senate Group | Canadian Senators Group | Changed affiliation | ||
| Jean-Guy Dagenais | Quebec (Victoria) | Conservative | |||||
| January 21, 2020 | Nicole Eaton | Ontario | Conservative | vacant | Mandatory retirement | ||
| January 24, 2020 | Joseph A. Day | New Brunswick (Saint John-Kennebecasis) | Progressive Senate Group | ||||
| January 24, 2020 | Marc Gold | Quebec (Stadacona) | Independent Senators Group | Non-affiliated | Change in parliamentary group affiliation following appointment to Representative of the Government in the Senate | ||
| January 31, 2020 | Raymonde Gagné | Manitoba | Change in parliamentary group affiliation following appointment as Legislative Deputy to the Government Representative | ||||
| Patti LaBoucane-Benson | Alberta | Change in parliamentary group affiliation following appointment as Government Liaison | |||||
| Brent Cotter | Saskatchewan | vacant | Non-affiliated | Appointed to Senate | |||
| Judith Keating | New Brunswick | ||||||
| February 1, 2020 | Serge Joyal | Quebec (Kennebec) | Progressive Senate Group | vacant | Mandatory retirement | ||
| February 6, 2020 | Brent Cotter | Saskatchewan | Non-affiliated | Independent Senators Group | Changed affiliation | ||
| Judith Keating | New Brunswick | ||||||
| February 18, 2020 | David Tkachuk | Saskatchewan | Conservative | vacant | Mandatory retirement | ||
This is a table of senate membership changes in the 42nd Canadian Parliament since election day.