Analysis of information sources in references of the Wikipedia article "Nonpartisan League" in English language version.
Its extraordinary appeal lay in the ability of the drafters to camouflage socialistic principles while playing up the orthodox features of agrarian reform. The organizational structure of the Nonpartisan League did not conceal its socialistic features so well.
[…] the Nonpartisan League, a new protest movement containing strong elements of agrarian socialism.
[…] great agrarian, anti-party protest movements of the late-nineteenth century. Townley's Nonpartisan League was one such movement.
In fact, the program that La Follette ran on — taxing the rich, cracking down on Wall Street abuses, empowering workers to organize unions, defending small farmers, breaking up corporate trusts, strengthening public utilities — fueled a resurgence of left-wing populist movements across the upper Midwest: the Non-Partisan League of North Dakota, the Farmer-Labor Party of Minnesota and the Progressive Party of Wisconsin.
Though he died of a heart attack less than a year after the election, La Follette's success inspired other progressive movements and campaigns around the country, including farmer-labor parties in Minnesota and North Dakota, the Progressive Party in Wisconsin, and the American Labor Party in New York City.
The creation of the Nonpartisan League (NPL) in 1915 advocated for progressive and socialist policies, chief among them being the government control of farming-adjacent industries, such as mills, banks, and railroads.
In addition, those opposed to the NPL used its socialist principles against it, labeling all members "Bolsheviks."
[…], while North Dakotans started a socialist political organization called the Non-Partisan League.
With its highly representative state government, it is unsurprising that North Dakota also has a history of left-wing third parties. However, unlike Vermont, the state has certain characteristics that discourage third parties. The most significant progressive third party in North Dakota's history was the Nonpartisan League, and before its fusion with the state Democratic Party in 1956, it was the last example of third-party progressivism in the state.
In fact, the program that La Follette ran on — taxing the rich, cracking down on Wall Street abuses, empowering workers to organize unions, defending small farmers, breaking up corporate trusts, strengthening public utilities — fueled a resurgence of left-wing populist movements across the upper Midwest: the Non-Partisan League of North Dakota, the Farmer-Labor Party of Minnesota and the Progressive Party of Wisconsin.
In addition, some notable examples of social democratic third-party success at the subnational level are the Socialist Party in Oklahoma in the 1920s and 1930s, the Non-Partisan League in North Dakota, the Washington Co-operative Commonwealth in Washington State, the Minnesota Farmer-Labor Party, and the current Vermont Progressive Party, which has relationship with the Democratic Party.