After a decade of representing one of Toronto’s most politically engaged ridings, Nathaniel Erskine-Smith walked away from federal politics for good on July 7, filing his formal resignation as the Liberal MP for Beaches East York and bringing an abrupt but long-anticipated close to his time in the House of Commons.
The departure sets the stage for a federal byelection that could come as soon as late August and, for the first time in recent memory, the Liberals are letting party members in the riding have a real say in who their next candidate will be.
In a notable break from recent practice, the Liberal Party announced it will hold an open nomination contest on July 18, giving registered Liberals in Beaches East York the chance to choose their own standard-bearer. The move stands in stark contrast to how the party handled byelections earlier this year in University Rosedale and Scarborough Southwest, where candidates were simply handed appointments from the top down, bypassing the grassroots entirely.
To participate, eligible Liberals must have been registered with the party by July 7 the same day Erskine-Smith submitted his resignation.
Erskine-Smith’s exit isn’t exactly surprising to those who have watched his career closely. First elected in the 2015 Liberal wave that swept Justin Trudeau to power, he went on to win Beaches East York three more times, most recently in 2025, when he captured a commanding 67.7 percent of the vote more than triple the share earned by his nearest rival, Conservative candidate Jocelyne Poirier at 23.5 percent.
But his tenure in Ottawa was never without turbulence. Appointed in December 2024 as Minister of Housing, Infrastructure, and Communities by Trudeau, Erskine-Smith’s stint in cabinet lasted barely five months before Prime Minister Mark Carney dropped him from the role in May 2025. He made no effort to conceal his feelings about the decision, saying publicly that he felt “disrespected.”
The real story behind his resignation, however, is a frustrating series of near-misses at the provincial level. Erskine-Smith has made little secret of his ambitions for Queen’s Park. He ran to lead the Ontario Liberals in 2023, pushing all the way to the final ballot before narrowly losing to former Mississauga Mayor Bonnie Crombie.
Crombie’s leadership unravelled after a dismal provincial election in which the Ontario Liberals finished third and she failed to win her own seat. She survived a September 2025 leadership review with only 57 percent support before stepping down formally in January 2026 seemingly reopening the door for Erskine-Smith.
But that door slammed shut again at a May 9 nomination meeting in the provincial riding of Scarborough Southwest, where Erskine-Smith was trying to secure a seat at Queen’s Park as a launching pad for another leadership run. He lost the nomination to business owner Ahsanul Hafiz by just 19 votes on the final ballot. He contested the result, citing irregularities but an Ontario Liberal Party arbitration committee rejected his appeal on May 2, finding no evidence of wrongdoing.
With that avenue closed, Erskine-Smith announced he would not seek the Ontario Liberal leadership, and days later confirmed what many had suspected: he was done with federal politics too.
Five candidates have stepped forward to seek the Liberal nomination so far, and the field reflects a range of backgrounds and local ties.
Summer Nudel, a social worker, and Claire Seaborn, a lawyer, have both entered the contest. Seaborn has publicly welcomed the party’s decision to hold an open nomination, while positioning herself as someone who would make an immediate impact in Parliament.
Former Ontario MPP Arthur Potts is also in the running, leaning on his past political experience as a differentiator, though he’s expressed frustration that the tight timeline doesn’t give candidates adequate opportunity to make their case to local Liberals.
Tanveer Shahnawaz, who managed Erskine-Smith’s constituency office, is running with the outgoing MP’s personal endorsement. Erskine-Smith has suggested that Shahnawaz’s hands-on experience in the riding makes him a natural fit to take over. And rounding out the field is John Tory Jr. son of the former Toronto mayor who is campaigning on a platform centred on economic affordability and public safety.
Under federal law, once the Speaker of the House notifies the chief electoral officer that a seat has been vacated, a byelection must be called between the 11th and 180th day. That puts the announcement window for Beaches East York somewhere between July 18 and January 3. Once called, the campaign itself must run between 36 and 50 days, meaning the earliest residents of the riding could cast a ballot for their next MP is August 24.
Beaches East York won’t be the only riding heading to the polls. Several other federal seats are vacant or soon will be.
Jonathan Wilkinson vacated North Vancouver Capilano on June 19 after being named Canada’s next ambassador to the European Union. In Quebec, up to four ridings could face byelections: Bloc MP Simon-Pierre Savard-Tremblay resigned his Saint-Hyacinthe Bagot Acton seat on June 19 to pursue provincial politics with the Parti Québécois, while Chicoutimi Le Fjord opened up on July 7 when Conservative MP Richard Martel was appointed to the Senate by Carney.
NDP MP Alexandre Boulerice has said he will resign when Quebec’s provincial election is called to run for Québec solidaire, while Liberal MP Steven Guilbeault announced in May that he was leaving Laurier Sainte-Marie, citing dissatisfaction with the Carney government’s environmental agenda. Saskatchewan Conservative Cathay Wagantall has also indicated she will retire from Parliament effective August 31.
As of July 10, the Liberals hold a majority government with 172 seats, followed by the Conservatives at 139, the Bloc Québécois at 21, the NDP at five, the Greens at one, and one independent with four seats currently sitting empty.
