Andrew Lawton (Conservative) won Elgin—St. Thomas—London South in the April 28, 2025 federal election with 50.1% of the vote, 4,555 votes (7 points) ahead of David Goodwin (Liberal). 64,949 valid votes were counted in this Ontario riding.
| Candidate | Votes | Share |
|---|---|---|
| Andrew Lawton · Conservativeelected Journalist · London, Ont. | 32,565 | 50.1% |
| David Goodwin · Liberal Director - AGF Investments · St. Thomas, Ont. | 28,010 | 43.1% |
| Paul Pighin · NDP Landscaper · London, Ont. | 3,118 | 4.8% |
| Stephen Campbell · People's Party Information Technology · Appin, Ont. | 1,256 | 1.9% |
Source: Elections Canada, official results of the April 28, 2025 general election. Candidates marked as incumbents follow Elections Canada's table. Results are not updated for by-elections or floor-crossings since; changes we have recorded are listed above the results.