Mary-Margaret McMahon

Mary-Margaret McMahon (Ontario Liberal Party) represents Beaches-East York in the Legislative Assembly of Ontario. The Integrity Index score for this profile is 59.6 out of 100 (grade D), below the site-wide average of 69.3; the breakdown below shows how it is calculated.

Of the 209 recorded divisions in the Legislative Assembly of Ontario over the period covered, McMahon cast a ballot in 178 (85%). Those ballots split 82 in favour and 96 against. McMahon's most recent recorded vote, on June 2, 2026, was against Bill 119, “Protecting Ontario’s Streets and Communities Act, 2026”, which passed.

McMahon is listed as the sponsor of 6 bills. McMahon sits on 1 committee: Standing Committee on Government Agencies (chair).

The record holds 8 public disclosure filings for McMahon, for 2025. No potential conflicts of interest are currently flagged. Parliamentary pay for fiscal 2026 is $157,350. Reported office spending through June 30, 2026 totals $28,779, mostly hospitality (79%).