What Is 25th Legislative Assembly of Ontario

Content on WhatAnswers is provided "as is" for informational purposes. While we strive for accuracy, we make no guarantees. Content is AI-assisted and should not be used as professional advice.

Last updated: April 15, 2026

Quick Answer: The 25th Legislative Assembly of Ontario existed from June 2, 1955, to April 24, 1959, following the 1955 provincial election. The Progressive Conservative Party, led by Premier Leslie Frost, maintained a majority government during this term.

Key Facts

Overview

The 25th Legislative Assembly of Ontario was a significant session in the province’s parliamentary history, spanning from 1955 to 1959. It followed the general election held on June 9, 1955, which reaffirmed the dominance of the Progressive Conservative Party under Premier Leslie Frost.

This legislative term occurred during a period of post-war economic expansion and infrastructure development in Ontario. The Assembly was responsible for enacting laws related to education, transportation, and urban planning, reflecting the province’s modernization efforts.

How It Works

The structure and operation of Ontario’s Legislative Assembly follow a Westminster-style parliamentary system, with defined roles for government, opposition, and legislative procedures.

Comparison at a Glance

Comparing the 25th Assembly to subsequent legislatures reveals shifts in party strength, representation, and policy focus over time.

LegislatureYears ActiveSeats in AssemblyGoverning PartyMajority Status
25th1955–195998Progressive ConservativeMajority
26th1959–196398Progressive ConservativeMajority
30th1975–1977125Progressive ConservativeMinority
38th2003–2007103LiberalMajority
43rd2022–present124Progressive ConservativeMajority

The table illustrates how the size of the Assembly has grown and how majority governments have alternated between parties. The 25th Assembly’s 98 seats remained standard until expansions in later decades, reflecting Ontario’s growing population and urbanization.

Why It Matters

The 25th Legislative Assembly played a foundational role in shaping modern Ontario through infrastructure and policy decisions that influenced decades of growth.

Understanding this legislative term provides insight into how mid-20th century policies laid the groundwork for Ontario’s economic and social development in the decades that followed.

Sources

  1. WikipediaCC-BY-SA-4.0

Missing an answer?

Suggest a question and we'll generate an answer for it.