Progressive Party (United States, 1912)
The Progressive Party was a third party in the United States formed in 1912 by former President Theodore Roosevelt after he lost the presidential nomination of the Republican Party to his former protégé, incumbent President William Howard Taft. The new party was known for taking advanced positions on progressive reforms and attracting some leading reformers. After the party's defeat in the 1912 presidential election, it went into rapid decline, disappearing by 1918. The Progressive Party was popularly nicknamed the "Bull Moose Party" since Roosevelt often said that he felt "strong as a bull moose" both before and after an assassination attempt on the campaign trail.
People's United Party
The PUP was founded in 1950 out of the Nationalist Movement, as an anti-colonial party while the country was ruled by the United Kingdom as British Honduras. Under George Cadle Price the PUP played a major role in negotiating Belize's self-government in 1964 and eventual independence in 1981. The PUP dominated local British Honduran and later Belizean politics from the mid-1950s until 1984, when it lost to the centre-right opposition United Democratic Party (UDP). The UDP has been the party's main opposition since the early 1970s. Under Price's leadership, the PUP returned to power in 1989 but was defeated by the UDP again in 1993.