Progressive Party (Vermont)
The Progressive Party of Vermont is perhaps the United States' most consistently successful minor party, although it is active in only one state. It originated in the independent campaign of Bernie Sanders for mayor of Burlington. Sanders, who is no longer closely associated with the Progressive Party, was later elected to the United States Congress as an independent. A group of his supporters organized themselves as the Progressive Alliance to contest further elections. The Alliance succeeded in electing several members, including Terry Bouricious to the Vermont State Legislature, and, after establishing a stable political base, formally became the Progressive Party. It currently has four representatives in the state House of Representatives.