# John Mannion (American politician)

John W. Mannion (born July 8, 1968) is an American educator and politician who has served as the U.S. representative from New York's 22nd congressional district since 2025. He previously served as a state senator from the 50th district between 2020 and 2024. Before entering politics, Mannion was a high school biology teacher.
Mannion was elected in 2020 to the New York State Senate, defeating Republican Angi Renna and became the first Democrat to hold the seat in more than 50 years. He then won the 2024 U.S. House election against incumbent Brandon Williams.

## Early life and education

Mannion was born and raised in Syracuse, New York, and is the grandson of Irish immigrants. His mother worked for New York Telephone and his father was employed by New York Central Railroad.
Mannion attended Bishop Ludden High School and later graduated from Binghamton University with a bachelor of science's degree in biology. He went on to earn a Master of Science in secondary science education from SUNY Oswego.

## Teaching career

After completing his studies, Mannion became a high school biology teacher. He taught in the West Genesee Central School District, where he also served as president of the West Genesee Teachers' Association.

## New York State Senate

In 2018, Mannion ran for the New York State Senate in the 50th district but narrowly lost to the incumbent, Republican Bob Antonacci. He ran again in 2020 and won the seat with 52.57% of the vote, defeating Republican Angi Renna.
Mannion's 2022 re-election campaign was closely contested. On election night, Republican candidate Rebecca Shiroff led by 396 votes before absentee ballots were counted. A recount ultimately declared Mannion the winner, with a margin of 10 votes, making it the closest race in the 2022 New York State Senate elections.
In 2023, Mannion announced his candidacy for New York's 22nd congressional district in the 2024 election, choosing not to seek re-election to the Senate. In June 2024, three former staffers accused Mannion and his wife of creating a hostile work environment. After an investigation, he was cleared of wrongdoing.

### Committee assignments

Mannion was the chairperson of the Committee on Disabilities. He also served as a member of the following committees:
* The Committee on Children and Families
* The Committee on Civil Service and Pensions
* The Committee on Education
* The Committee on Environmental Conservation
* The Committee on Housing, Construction and Community Development
* The Committee on Internet and Technology

## U.S. House of Representatives
### Elections

Mannion won the 2024 Democratic primary for the U.S. House of Representatives in New York's 22nd congressional district. He defeated Sarah Klee Hood and went on to face incumbent Republican Representative Brandon Williams.

### Tenure

In 2025, Mannion was one of 46 House Democrats who joined all Republicans to vote for the Laken Riley Act.

## Personal life

Mannion is married to his wife, Jennifer. They have three children.

## Electoral history
### 2018

2018 New York State Senate election, District 50 :
| Party | Party | Candidate | Votes | % |
| | Republican | Bob Antonacci (incumbent) | 62,330 | 50.92 |
| | Democratic | John Mannion | 59,998 | 49.02 |
| | Write-in | Write-in | 75 | 0.06 |
| Total votes | Total votes | Total votes | 157,828 | 100.00 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2020

2020 New York State Senate election, District 50 :
| Party | Party | Candidate | Votes | % |
| | Democratic | John Mannion | 77,293 | 48.97 |
| | Working Families | John Mannion | 5,889 | 3.73 |
| | Total | John Mannion | 83,182 | 52.70 |
| | Republican | Angi Renna | 62,929 | 39.87 |
| | Conservative | Angi Renna | 9,806 | 6.21 |
| | Independence | Angi Renna | 2,308 | 1.62 |
| | Total | Angi Renna | 75,043 | 47.30 |
| Total votes | Total votes | Total votes | 157,828 | 100.00 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 2022

2022 New York State Senate election, District 50 :
| Party | Party | Candidate | Votes | % |
| | Democratic | John Mannion (incumbent) | 61,579 | 50.004 |
| | Republican | Rebecca Shiroff | 61,569 | 49.996 |
| Total votes | Total votes | Total votes | 123,148 | 100.00 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2024

2024 United States House of Representatives election in New York, District 22 :
| Party | Party | Candidate | Votes | % |
| | Democratic | John Mannion | 16,624 | 61.6 |
| | Democratic | Sarah Klee Hood | 10,373 | 38.4 |
| Total votes | Total votes | Total votes | 26,997 | 100.0 |
2024 United States House of Representatives elections in New York, District 22 :
| Party | Party | Candidate | Votes | % |
| | Democratic | John Mannion | 194,450 | 54.561 |
| | Republican | Brandon Williams (incumbent) | 161,939 | 45.439 |
| Total votes | Total votes | Total votes | 356,389 | 100.00 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |