One-quarter of NDP MPs elected in 2015 are not seeking re-election in this fall’s vote after two Quebec MPs ruled out running again earlier this week.

NDP MPs Marjolaine Boutin-Sweet and Anne Minh-Thu Quach confirmed Thursday they would not seek re-election in October’s vote, becoming the 10th and 11th party incumbents to publicly announce they would bow out, according to an iPolitics analysis.

This includes former leader Thomas Mulcair, who resigned his seat last summer to accept a teaching post, and Kennedy Stewart, who also stepped down in 2018, but to successfully seek election as mayor of Vancouver.

Other NDP MPs who have announced they won’t seek re-election include Alberta’s Linda Duncan, Ontario’s Irene Mathyssen and David Christopherson, Quebec’s Helene Laverdiere and Romeo Saganash, and B.C.ers Fin Donnelly and Sheila Malcolmson, who officially resigned earlier this year to run successfully for the provincial NDP in a byelection.

The NDP had 44 members elected under the party’s banner in 2015, a steep drop from the 103 who won in 2011.

Saskatchewan MP Erin Weir has announced he will attempt to be re-elected after being booted from the party’s caucus after an investigation into harassment allegations. Leader Jagmeet Singh has said he will not let Weir run for the party in 2019, though Weir has said he still intends to seek the party’s nomination in his Regina-Lewvan riding.

With Weir’s expulsion and the resignations of Mulcair, Malcolmson and Stewart, the party is down to 40 MPs, eight of which have already said they won’t run again. Singh is seeking election to the House in Monday’s byelection in the Metro Vancouver riding of Burnaby South.

Boutin-Sweet and Quach were first elected in 2011 as the NDP made historic gains in Quebec, grabbing 59 of the province’s then-75 seats. The so-called Orange Wave allowed the party to make historic gains that captualted it to the Official Opposition ranks for the first time.

Boutin-Sweet, who represents the riding of Hochelaga in Montreal, said she no longer had the energy to serve as MP, noting she will be 64 by the time of the next election.

“I respect the people of Hochelaga too much to only represent them part time,” she said in a statement.

“My heart is still with you, but my energy levels are not.”

She narrowly won election in 2015, besting law professor and Liberal candidate Marwah Rizqy by less than a percentage point. Rizqy won election to the Quebec legislature in 2018.

Quach, who holds the riding of Salaberry-Suroit west of Montreal, said in a statement that she decided not to seek reelection because of “family matters,” namely that she is pregnant with her second child and her daughter is entering kindergarten in September.

She thanked her constituencies for allowing her to represent the riding and for helping her discover the worlds of agriculture and business, local community organizations, and the Akwesasne Mohawk First Nation, located in the riding.

iPolitics has counted 10 Conservative incumbents that have announced they are not running again in 2019 compared to seven for the Liberals.

with files from Kirsten Smith