After Olson's premature death from cancer in 1936 and the interregnum of Lieutenant Governor
Hjalmar Petersen, Benson stepped into the breach and was elected the 24th
governor of Minnesota by the largest margin in state history. He served as the
24th governor of Minnesota from January 4, 1937, to January 2, 1939. His defeat by a record margin in 1938 is seen as the beginning of the end of the Farmer-Labor Party as an independent political force and a setback for progressive politics in Minnesota. Benson launched his initial campaign on September 21, 1936, in
Appleton, Minnesota. Benson argued in his
keynote address against the Republican plan to pass a constitutional amendment banning
property tax and increasing
sales tax. Benson argued that the state should instead deliver tax relief through a raised
income tax on the rich,
inheritance tax, and various forms of higher
corporate tax. Benson's address was so well attended, the 2000 seats in the county armory were filled, as was all standing room, and 3000 people gathered in a nearby park to listen to the broadcast. Benson found it difficult to deliver the speech due to the amount of applause received. On October 9, 1936,
Franklin D. Roosevelt delivered an address at the Minnesota State Capitol in which he endorsed Benson for governor. Roosevelt called Benson "...A man who has done more for industrial workers, small business men and farmers than any other man in this generation”. Benson, like previous Farmer-Laborite candidates, faced regular accusations of
communism. Specifically, Benson was accused of being a supporter of
Earl Browder. Benson stated these accusations were created to distract from real issues. Benson chose not to treat these claims as serious, and mostly ignored them. Former political allies from
Wisconsin, Governor
Philip La Follette and Senator
Robert M. La Follette Jr., broke with Benson. The La Follettes has sought to unite the Farmer-Labor party with the
Wisconsin Progressive Party into the
National Progressives of America, with candidates already slated in
Iowa. Benson refused the union, resulting in the collapse of relations between the two. While running for re-election in 1938, Benson would face serious primary opposition from Hjalmar Petersen, leader of the more moderate wing of the party. Benson was renominated, but only with 51.91% of the primary vote. Franklin D. Roosevelt did not endorse him for a second term. ==Post-Governor==