From traitor to brave to principled, there exists a range of terms to characterize MPs who switch party allegiance. However, a consistent theme emerges in Canadian political history: the challenge of re-election for these floor-crossing politicians.
In a surprising development, long-standing Conservative member Chris d’Entremont has announced his move to join the federal Liberal caucus, with Prime Minister Mark Carney hinting at the possibility of others following suit.
The act of floor-crossing dates back to Confederation, but historical data indicates a downward trend in electoral success following such shifts.
According to Semra Sevi, an assistant professor at the University of Toronto specializing in political science, switching parties poses a significant risk to a politician’s re-election prospects.
Research conducted by Sevi, which tracked party switches from Confederation to 2015, revealed that while floor-crossers initially maintained their vote share, the trend shifted from the 1970s onwards.
Sevi explained that as parties solidify, the electoral consequences of party switching have significantly increased, making survival outside one’s original party increasingly challenging.
Despite some rare success stories, the ultimate outcome remains uncertain.
Throughout history, numerous MPs have switched affiliations, ranging from becoming Independents to forming new parties or aligning with former adversaries.
Labeling Switches as ‘Opportunistic’
Sevi emphasized that an MP’s re-election prospects post-party switch often hinge on the degree to which voters accept their rationale.
D’Entremont cited his dissatisfaction with Conservative Leader Pierre Poilievre’s leadership style as the driving force behind his decision to switch parties, highlighting the perceived negativity in politics.
Sevi noted that party switches are commonly viewed as opportunistic, potentially undermining the politician’s credibility.
Given that the switch occurred approximately seven months after the last election, the impact on D’Entremont’s constituents will depend on their alignment with his reasons.
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