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The New Blue Party of Ontario (New Blue; French: Nouveau Parti Bleu de l'Ontario) is a right-wing populist political party in the Canadian province of Ontario. Founded in 2020, the party is led by Jim Karahalios, the husband of Belinda Karahalios, the party's first MPP. Formed from a split within the Progressive Conservative Party of Ontario out of frustration with the party's lack of adherence to conservative principles.
| Member | District | Tenure | Notes |
| Belinda Karahalios | Cambridge | 2021–2022 | Previously served as a PC MPP from 2018–2020 and an independent from 2020–2021. |
| Election year | No. ofoverall votes | % ofoverall total | No. ofcandidates run | No. ofseats won | +/− | Government |
| 2022 | 127,180 | 2.72 | 123 / 124 † | 0 / 124 | −1 | N/A |
| 2025 | 80,245 | 1.60 | 108 / 124 | 0 / 124 | 0 | N/A |
| By-election | Date | Candidate | Votes | % | Place |
| Hamilton Centre | March 16, 2023 | Lee Weiss Vassor | 148 | 0.85% | 5/10 |
| Kanata—Carleton | July 27, 2023 | Jennifer Boudreau | 636 | 1.97% | 4/6 |
| Scarborough—Guildwood | July 27, 2023 | Danielle Height | 151 | 0.97% | 5/12 |
| Kitchener Centre | November 30, 2023 | Paul Simoes | 532 | 2.25% | 5/18 |
| Lambton—Kent—Middlesex | May 2, 2024 | Keith Benn | 1,515 | 5.50% | 4/8 |
| Milton | May 2, 2024 | John Spina | 1,102 | 4.02% | 4/9 |
| Bay of Quinte | September 19, 2024 | Margaret Schuler | 369 | 0.99% | 5/7 |