Reform movement (pre-Confederation Canada)
In Upper Canada (Ontario), the Reform movement was formed in opposition to the Family Compact. It was led initially by William Lyon Mackenzie, who became the principal figure in the Upper Canada Rebellion of 1837. Mackenzie went into exile as a result of the failed rebellion. The uprising led to the 1839 Durham Report, which recommended responsible government and the union of Upper and Lower Canada as a means of assimilating Francophones. Only the union of the Canadas was to be immediately implemented.
Upper Canada Rebellion
The Canadian Alliance Society was reborn as the Constitutional Reform Society in 1836, when it was led by the more moderate reformer, Dr William W. Baldwin. The Reformers experienced a disaster at the 1836 elections for the 13th Parliament of Upper Canada, and the Society took its final form as the Toronto Political Union in 1837. It was this group of the disenfranchised that began organizing local "Vigilance Committees" to elect delegates to a so-called Constitutional Convention in July 1837. This became the organizational structure for the Rebellion; most of the rebel organizers were elected Constitutional Convention delegates.