| Ontario electoral district | |
|---|---|
| St. Catharines-Brock in relation to southern Ontario ridings, 1995 | |
| Defunct provincial electoral district | |
| Legislature | Legislative Assembly of Ontario |
| District created | |
| First contested | 1975 |
| Last contested | 1995 |
| Demographics | |
| Population | |
| Electors | |
| Area (km²) | |
| Census divisions | Niagara |
| Census subdivisions | St. Catharines, Niagara-on-the-Lake |
St. Catharines—Brock was a provincial electoral division in Ontario, Canada containing the town of Niagara-on-the-Lake as well as the southern portion of the city of St. Catharines. It was created prior to the 1975 provincial election, and was abolished in 1999 when Ontario adjusted all of its provincial electoral divisions to match those at the federal level. With the riding being merged into the ridings of St. Catharines, Niagara Falls, and Niagara Centre
| Name | Party | Took Office | Left Office | |
|---|---|---|---|---|
| Bob Welch |
Progressive Conservative | 1975 | 1985 | |
| Peter Partington |
Progressive Conservative | 1985 | 1987 | |
| Mike Dietsch |
Liberal | 1987 | 1990 | |
| Christel Haeck |
New Democratic Party | 1990 | 1995 | |
| Tom Froese |
Progressive Conservative | 1995 | 1999 |
| Ontario general election, 1995 | |||||
|---|---|---|---|---|---|
| Party | Candidate | Votes | % | ±% | |
| Progressive Conservative | Tom Froese | 11,976 | 47.0 | +21.7 | |
| Liberal | Gail Richardson | 7,373 | 29 | -1.5 | |
| New Democrat | (x)Christel Haeck | 5521 | 21.7 | -13 | |
| Family Coalition | Bert Pynenburg | 598 | 2.3 | -.8 | |
| Total valid votes | 25,468 | 100.00 | |||
| Ontario general election, 1990 | |||||
|---|---|---|---|---|---|
| Party | Candidate | Votes | % | ±% | |
| New Democrat | Christel Haeck | 9,538 | 34.6 | +9.7 | |
| Liberal | (x)Mike Dietsch | 8,379 | 30.4 | -10.9 | |
| Progressive Conservative | Rob Welch | 6,969 | 25.3 | -8.4 | |
| Confederation of Regions | Rodney Book | 1,499 | 5.4 | ||
| Family Coalition | Ed Klassen | 837 | 3.2 | ||
| Libertarian | Conrad Gibbons | 270 | 1.0 | ||
| Total valid votes | 27,525 | 100.00 | |||
| Ontario general election, 1987 | |||||
|---|---|---|---|---|---|
| Party | Candidate | Votes | % | ±% | |
| Liberal | Mike Dietsch | 10,822 | 41.4 | +2.6 | |
| Progressive Conservative | (x)Peter Partington | 8,821 | 33.7 | -7.8 | |
| New Democrat | Christel Haeck | 6,514 | 14.9 | +8.9 | |
| Total valid votes | 27,777 | 100.00 | |||
| Ontario general election, 1985 | |||||
|---|---|---|---|---|---|
| Party | Candidate | Votes | % | ±% | |
| Progressive Conservative | Peter Partington | 9,741 | 41.6 | -7.2 | |
| Liberal | Bill Andres | 9,081 | 38.7 | +6.5 | |
| New Democrat | Robert Woolston | 5,624 | 16.5 | -2.9 | |
| Green | Brian Dolby | 755 | 3.2 | ||
| Total valid votes | 23,444 | 100.00 | |||
| Ontario general election, 1981 | |||||
|---|---|---|---|---|---|
| Party | Candidate | Votes | % | ±% | |
| Progressive Conservative | (x)Bob Welch | 10,547 | 48.8 | -3 | |
| Liberal | Bill Andres | 6,882 | 31.8 | +6.2 | |
| New Democrat | Heather Lee Kilty | 4,204 | 19.4 | -3.2 | |
| Total valid votes | 21,633 | 100.00 | |||
| Ontario general election, 1977 | |||||
|---|---|---|---|---|---|
| Party | Candidate | Votes | % | ±% | |
| Progressive Conservative | Bob Welch | 11,944 | 51.8 | +3.8 | |
| Liberal | Marv Edwards | 5,910 | 25.6 | -.2 | |
| New Democrat | Robert Hoover | 5,215 | 22.6 | -2.9 | |
| Total valid votes | 23,069 | 100.00 | |||
| Ontario general election, 1975 | |||||
|---|---|---|---|---|---|
| Party | Candidate | Votes | % | ±% | |
| Progressive Conservative | Bob Welch | 10,978 | 48 | ||
| Liberal | Margo Pyfe | 5,911 | 25.8 | ||
| New Democrat | Fred Lindal | 5,836 | 25.5 | ||
| Total valid votes | 25,572 | 100.00 | |||