Progressive Conservative incumbent Sam Oosterhoff has secured his third full term as MPP for Niagara West, capturing nearly half of all votes cast in the 2025 provincial election. Oosterhoff received 21,034 votes, representing 49.66% of the total, an increase of 4.73% from his 2022 performance. The 28-year-old politician has represented the riding since first winning a by-election in 2016 at the age of 19.
NDP candidate Dave Augustyn finished in second place with 12,002 votes or 28.34% of the total. Liberal Shauna Boyle came third with 6,700 votes (15.82%), while Green Party candidate Mark Harrison received 1,673 votes (3.95%). Other candidates combined for 932 votes. Voter turnout was 47.40%, with less than half of the riding's 89,440 eligible voters casting ballots.
The Niagara West riding encompasses several communities in Ontario's Golden Horseshoe region, including Grimsby, Lincoln, Pelham, West Lincoln, Wainfleet, and part of western St. Catharines. The area has consistently elected PC representatives since the riding was created in its current form in 2018. With a total area of 997 km², Niagara West is one of the larger electoral districts in the region.
Key issues during the campaign included healthcare funding, housing affordability, transportation infrastructure, environmental protection of Greenbelt lands, and support for the local agriculture and wine industry. The riding has a population of approximately
97,000 people with an average age of 43 years.
Provincially, the PC party maintained its majority government status while the NDP held onto its position as official opposition despite losing some support. The Liberals gained seats across Ontario but suffered a major blow when their leader lost in their own riding. The Green Party managed to hold its two seats with only a slight drop in popular vote.
Oosterhoff's victory in Niagara West mirrors the broader trend of PC support in the region, which has been a reliable area for the party in recent elections. The riding, with its mix of rural and suburban areas, continues to back conservative representation in the provincial legislature.
