With just over five months until October’s federal election, at least 16 Liberals, 14 Conservatives and 13 New Democrats who were MPs last summer won’t be running again -- at least not for the parties that helped them get elected in 2015.

Here’s a running tally of the parliamentarians who have been kicked out of their parties or are calling it quits.

Liberals losing at least 16 incumbents

At least 16 MPs who were Liberals last summer won’t be running again for the party this fall. The best-known is Scott Brison, the MP for Kings-Hants in Nova Scotia, who quit his position as Treasury Secretary in January.

Brison was first elected as a Progressive Conservative in 1997 and went on to spend 22 years in Parliament. He has faced questions in recent months over the suspension of Vice-Admiral Mark Norman, who was accused of leaking cabinet secrets related to a contract with Quebec-based Davie Shipbuilding. Federal prosecutors stayed the charge against Norman in May, citing “no reasonable prospect of conviction.”

Scott BrisonScott Brison on Monday, Oct. 15, 2018. (THE CANADIAN PRESS/Sean Kilpatrick)

Andrew Leslie, who served as lieutenant-general of the Canadian Forces before winning the Ottawa seat of Orleans in 2015, had been expected to be called as a defence witness in the Norman trial. He too has said he won’t run again.

Celina Caesar-Chavannes, the outspoken representative from the Ontario riding of Whitby, announced her departure in March.

Caesar-Chavannes was one of the first Liberals to publicly support Jody Wilson-Raybould after the Globe and Mail broke a story alleging the PMO pressured her when she was attorney general to intervene in the criminal prosecution of SNC-Lavalin. Caesar-Chavannes said her decision to leave is for “personal reasons.”

Wilson-Raybould (Vancouver Granville) was kicked out of the Liberal caucus along with former cabinet minister Jane Philpott (Markham—Stouffville). Both women have not yet said whether they will run again as independents or for other parties.

Celina Caesar-ChavannesCelina Caesar-Chavannes on Friday, May 25, 2018. (THE CANADIAN PRESS/Justin Tang)

Four Nova Scotia Liberals – Bill Casey (Cumberland– Colchester), Mark Eyking (Sydney—Victoria), Colin Fraser (West Nova) and Rodger Cuzner (Cape Breton–Canso) – have also said they’re calling it quits.

Also not running are Ontario MPs Borys Wrzesniewskyj (Etobicoke Centre), John Oliver (Oakville), and Don Rusnak (Thunder Bay—Rainy River).

West Vancouver MP Pamela Goldsmith-Jones has also decided not to try again.

The Liberals have also lost Nicola Di Iorio (Saint-Leonard—Saint Michel), who resigned from his Quebec seat last month after a long absence, and Ontario’s Raj Grewal (Brampton East), who said he was resigning after a gambling scandal but has decided to continue sitting as an Independent.

Meanwhile, Leona Alleslev (Aurora—Oak Ridges—Richmond Hill) crossed the floor from the Liberals to the Conservatives.

At least 14 Conservatives are moving on

At least 14 people who were Conservative MPs last summer won’t run again for the party this fall.

Among the most high-profile veterans moving on are Ontario MPs Kellie Leitch (Simcoe-Grey) and Rob Nicholson (Niagara Falls).

Leitch served as Minister responsible for the Status of Women under Stephen Harper. She famously proposed a “values test” for new Canadians when she ran for the party leadership.

Nicholson held a number of cabinet roles under Harper, including Minister of Foreign Affairs, Minister of National Defence and Minister of Justice and Attorney General.

Tony Clement, who also served in cabinet under Harper, was kicked out of caucus last fall after a sexting scandal. He has said he will not run again as an independent in his riding of Parry Sound—Muskoka.

Kellie LeitchKellie Leitch on Monday, July 15, 2013. (Adrian Wyld / THE CANADIAN PRESS)

Larry Miller, from the Ontario riding of Bruce—Grey—Owen Sound, is leaving after 28 years.

MP Larry MillerLarry Miller announces his retirement. (CTV Barrie / Roger Klein)

Also retiring from the Conservatives’ Ontario caucus are Guy Lauzon (Stormont—Dundas—South Glengarry), Bev Shipley (Lambton—Kent—Middlesex), Dave Van Kesteren (Chatham-Kent—Leamington), David Tilson (Dufferin—Caledon) and Alex Nuttall (Barrie—Springwater—Oro-Medonte).

The party is also losing Alberta MPs Jim Eglinski (Yellowhead) and David Anderson (Cypress Hills—Grasslands), Manitoba’s Robert Sopuck (Dauphin—Swan River—Neepawa) and B.C.’s Mark Warawa (Langley—Aldergrove).

Maxime Bernier (Beauce) left the Conservatives last year after narrowly losing the leadership to Andrew Scheer. He went on to start the People’s Party of Canada.

New Democrats have lost nearly one-third of caucus

So far, the New Democratic Party is facing the biggest loss. Thirteen NDP members have decided not to run again, which is nearly one third of their 44-member caucus.

Ousted party leader Tom Mulcair resigned his Quebec seat (Outremont) in 2018, and the Liberals picked it up in last month’s byelection.

Kennedy Stewart (Burnaby South) left his seat in the fall and became Mayor of Vancouver. Muclair’s successor as leader, Jagmeet Singh, helped the party keep the seat in the byelection last month.

Sheila Malcolmson left the B.C. seat of Nanaimo-Ladysmith in October, and was later elected to the provincial legislature.

At least three more NDP from B.C. have announced their retirements: Nathan Cullen (Skeena—Bulkey Valley), Murray Rankin (Victoria) and Fin Donnelly (Port Moody—Coquitlam).

Nathan CullenNathan Cullen on Tuesday, June 5, 2018. THE CANADIAN PRESS/Sean Kilpatrick

In addition to Mulcair, four more Quebec members are leaving: Romeo Saganash (Abitibi—Baie-James—Nunavik—Eeyou), Helene Laverdiere (Laurier—Sainte Marie), Anne Minh-Thu Quach (Salaberry—Suroit) and Marjolaine Boutin-Sweet (Hochelaga).

NDP MP Romeo SaganashRomeo Saganash on Tuesday, Sept. 25, 2018. (THE CANADIAN PRESS/Sean Kilpatrick)

Linda Duncan, the NDP’s only member from Alberta (Edmonton Strathcona), is moving on after more than a decade.

Longtime Ontario MPs Irene Mathyssen (London—Fanshawe) and David Christopherson (Hamilton Centre) have also decided to give up their seats.