Mercedes leads the 2026 constructors' standings with a commanding 180 points after sweeping the first four races, fueled by Kimi Antonelli's three consecutive victories from pole and George Russell's earlier win. This recent dominance, combined with targeted aero and downforce upgrades arriving for the Circuit Gilles Villeneuve, underpins the 62.5% implied probability for a Mercedes one-two finish. McLaren sits third in the championship but has shown strong straight-line speed and is introducing its second major development package, supporting the 32% consensus. Red Bull and Ferrari trail significantly in recent form and points, limiting their realistic chances despite historical Montreal success, while lower-order teams face even steeper gaps in pace and reliability.