Niagara West: 2025 Ontario election results

Sam Oosterhoff (PC) won Niagara West in the February 27, 2025 Ontario general election with 51.1% of the vote, 11,825 votes (26.4 points) ahead of Shauna Boyle (LIB). 44,817 valid votes were counted.

Sam Oosterhoff
Elected for Progressive Conservative
11,825 voteswinning margin (26.4 points)
Sam Oosterhoff 51.1%Shauna Boyle 24.7%Dave Augustyn 16.3%Mark Harrison 4%

Results by candidate

Niagara West 2025 results by candidate
CandidatePartyVotesShare
Sam OosterhoffelectedProgressive Conservative22,916
51.1%
Shauna BoyleLiberal11,091
24.7%
Dave AugustynNew Democratic7,312
16.3%
Mark HarrisonGreen1,794
4%
Aaron AlbanoNew Blue676
1.5%
Aaron AllisonOntario Party629
1.4%
Stefanos KaratopisOther326
0.7%
Jim TormaOther73
0.2%

Source: Elections Ontario, Official Return from the Records for the 2025 general election, and 2022 electoral district boundaries.

How it compares

  • The 99th-closest race of 124 ridings: a margin of 11,825 votes (26.4 points).
  • Progressive Conservative candidates won 43% of the vote across Ontario; Sam Oosterhoff took 51.1% here, 8.1 points above that.
  • Progressive Conservative also won this riding at the previous election.

Nearby ridings