# Markham—Thornhill (federal electoral district)

Markham—Thornhill is a federal electoral district in Ontario, Canada, that has been represented in the House of Commons of Canada since 2015. It encompasses a portion of Ontario previously included in the electoral districts of Markham—Unionville and Thornhill.
Markham—Thornhill was created by 2012 federal electoral boundaries redistribution and was legally defined in the 2013 representation order. It came into effect upon the dropping of the writs for the 2015 federal election.

## Demographics

Markham—Thornhill loses more people than any other federal electoral district in the 905 region. The population in 2016 was 99,078 which is a 3.1% drop from 102,221 in 2011.
    According to the 2021 Canadian census
Ethnic groups: 42.8% Chinese, 27.5% South Asian, 12.7% White, 3.8% Black, 2.7% Filipino, 3.0% West Asian, 1.3% Korean Languages: 29.5% English, 18.7% Cantonese, 13.8% Mandarin, 7.6% Tamil, 3.1% Urdu, 2.3% Punjabi, 2.0% Persian, 1.9% Gujarati, 1.3% Tagalog, 1.0% Korean
Religions: 28.2% Christian (13.5% Catholic, 2.4% Christian Orthodox, 1.0% Anglican, 11.3% other), 14.3% Hindu, 10.8% Muslim, 4.7% Buddhist, 3.1% Jewish, 2.2% Sikh, 36.1% none Median income: $32,400 (2020)
Average income: $47,640 (2020)

## Members of Parliament

This riding has elected the following members of Parliament:
| Parliament | Years | Member | Party |
| Markham—Thornhill Riding created from Markham—Unionville and Thornhill |||||
| 42nd | 2015–2017 | John McCallum | Liberal |
| 42nd | 2017–2019 | Mary Ng | Liberal |
| 43rd | 2019–2021 | Mary Ng | Liberal |
| 44th | 2021–present | Mary Ng | Liberal |

## Election results
### 2021

vte2021 Canadian federal election :
| Party | Candidate | Votes | % | ±% | Expenditures |
| | Liberal | Mary Ng | 23,709 | 61.5 | +7.6 | $67,977.46 |
| | Conservative | Melissa Felian | 10,136 | 26.3 | -8.3 | $57,520.72 |
| | New Democratic | Paul Sahbaz | 3,222 | 8.4 | +1.1 | $633.62 |
| | Green | Mimi Lee | 813 | 2.1 | -0.7 | $4,285.37 |
| | People's | Ilia Pashaev | 648 | 1.7 | +0.9 | $1,203.75 |
| Total valid votes/expense limit | Total valid votes/expense limit | Total valid votes/expense limit | 38,528 | – | – | $106,559.92 |
| Total rejected ballots | Total rejected ballots | Total rejected ballots | 398 |
| Turnout | Turnout | Turnout | 38,926 | 55.70 |
| Eligible voters | Eligible voters | Eligible voters | 69,883 |
| Source: Elections Canada |||||||
2021 federal election redistributed results :
| Party | Vote | % |
| Liberal | 27,193 | 61.54 |
| Conservative | 11,659 | 26.38 |
| New Democratic | 3,693 | 8.36 |
| Green | 883 | 2.00 |
| People's | 762 | 1.72 |

### 2019

vte2019 Canadian federal election :
| Party | Candidate | Votes | % | ±% | Expenditures |
| | Liberal | Mary Ng | 23,899 | 53.91 | +2.55 | $80,357.71 |
| | Conservative | Alex Yuan | 15,319 | 34.56 | -4.43 | $74,064.17 |
| | New Democratic | Paul Sahbaz | 3,233 | 7.29 | +3.81 | none listed |
| | Green | Chris Williams | 1,247 | 2.81 | +0.60 | none listed |
| | People's | Peter Remedios | 357 | 0.81 | | $0.00 |
| | Independent | Josephbai Macwan | 276 | 0.62 | | none listed |
| Total valid votes/expense limit | Total valid votes/expense limit | Total valid votes/expense limit | 44,331 | 100.0 |
| Total rejected ballots | Total rejected ballots | Total rejected ballots | 448 | 1.00 | +0.41 |
| Turnout | Turnout | Turnout | 44,779 | 61.76 | +31.14 |
| Eligible voters | Eligible voters | Eligible voters | 72,499 |
| | Liberal hold | Liberal hold | Swing | Swing | +3.49 |
| Source: Elections Canada |||||||

### 2017 by-election

A by-election was held on April 3, 2017, following John McCallum's appointment as Ambassador to China on January 10, 2017.
Canadian federal by-election, April 3, 2017 Resignation of John McCallum :
| Party | Candidate | Votes | % | ±% |
| | Liberal | Mary Ng | 9,856 | 51.53 | −4.19 |
| | Conservative | Ragavan Paranchothy | 7,501 | 39.22 | +6.91 |
| | New Democratic | Gregory Hines | 671 | 3.51 | −7.21 |
| | Progressive Canadian | Dorian Baxter | 566 | 2.96 | |
| | Green | Caryn Bergmann | 426 | 2.23 | +0.98 |
| | Libertarian | Brendan Thomas Reilly | 118 | 0.62 | |
| | Independent | Above Znoneofthe | 77 | 0.40 | |
| Total valid votes/expense limit | Total valid votes/expense limit | Total valid votes/expense limit | 19,125 | 100.0 | – |
| Total rejected ballots | Total rejected ballots | Total rejected ballots | | - |
| Turnout | Turnout | Turnout | 27.51 |
| Eligible voters | Eligible voters | Eligible voters | 69,838 |
| | Liberal hold | Liberal hold | Swing | Swing | −5.55 |

### 2015

2015 Canadian federal election :
| Party | Candidate | Votes | % | ±% | Expenditures |
| | Liberal | John McCallum | 23,878 | 55.72 | +18.61 | $78,406.90 |
| | Conservative | Jobson Easow | 13,849 | 32.31 | -4.08 | $128,323.59 |
| | New Democratic | Senthi Chelliah | 4,595 | 10.72 | -12.67 | $48,598.52 |
| | Green | Joshua Russell | 535 | 1.25 | -1.37 | – |
| Total valid votes/expense limit | Total valid votes/expense limit | Total valid votes/expense limit | 42,857 | 100.00 | | $203,953.81 |
| Total rejected ballots | Total rejected ballots | Total rejected ballots | 240 | 0.56 | – |
| Turnout | Turnout | Turnout | 43,097 | 61.14 | – |
| Eligible voters | Eligible voters | Eligible voters | 70,484 |
| | Liberal notional hold | Liberal notional hold | Swing | Swing | +11.34 |
| Source: Elections Canada |||||||
2011 federal election redistributed results :
| Party | Vote | % |
| Liberal | 14,128 | 37.11 |
| Conservative | 13,856 | 36.39 |
| New Democratic | 8,907 | 23.39 |
| Green | 998 | 2.62 |
| Others | 186 | 0.49 |