During the
1932 presidential election, Munn supported
Herbert Hoover in an attempt to save
prohibition, but Hoover was defeated in a landslide. In 1941, he ran for a seat on the Michigan Board of Regents as a member of the Prohibition Party. In 1947, he became the chairman of the Michigan Prohibition Party; with the party, he ran for governor in
1952 and
1954. In 1955, he was elected as the national chairman of the party without any opposition. At the Prohibition Party's national convention on September 3, 1959,
Rutherford Decker and Munn were given the presidential and vice-presidential nominations for the
1960 presidential election by 95 delegates. On August 27, 1963, around 300 delegates attended the Prohibition National Convention, voting to nominate Munn and Mark R. Shaw as the party's presidential and vice-presidential candidates, respectively. In the
general election, Munn received 23,267 votes. On June 29, 1968, 56 delegates attended the convention, nominating a ticket of Munn and Rolland E. Fisher. In the
general election, Munn received 15,123 votes. On June 25, 1971, Munn won the presidential nomination again, with Marshall E. Uncapher as his running mate. He received 13,497 votes in the
general election. On June 6, 1992, he died in Hillsdale, Michigan at age 88. ==Electoral history==