Stevenson's most significant act since entering parliament was breaking with Labour five times on 20 June 2025, voting against the Terminally Ill Adults (End of Life) Bill at Third Reading and backing several amendments that sought to tighten its eligibility criteria — including a provision to prevent people who voluntarily stopped eating and drinking from qualifying as terminally ill. Those rebel votes place him among the more vocal opponents of the assisted dying legislation within the parliamentary Labour Party, where he sits 22 percentage points above his colleagues on end-of-life autonomy measures that would restrict rather than expand the bill's scope.
Away from that, Stevenson is a 97.6% party-line voter with a 70% participation rate, modestly below the Commons average. His voting record is strongly pro-workers' rights and pro-progressive taxation, and he backed railway nationalisation at Third Reading. He is notably resistant to business-friendly measures (4% aligned) and consistently opposes tougher criminal justice approaches — 20 points below his party average on crime votes. His speeches, spread across 51 contributions in 29 debates, cluster around the economy, local government, immigration, and social care, reflecting his North Lanarkshire constituency's concerns. He welcomed an AI Growth Zone designation for the area in March 2026, though news coverage shows him endorsing government decisions rather than leading campaigns that secured them.
Stevenson sits on the Procedure Committee, suggesting an interest in how parliament conducts its business. His deviation from the party average on civil liberties (21 points below) and pension protection (26 points below) is worth watching but lacks enough speech data to explain clearly. His last recorded speech was January 2026, and local news data for the past 90 days is insufficient to assess recent constituency sentiment.