Kellogg was a former Rochester city attorney (1878-1881), Olmsted County Attorney (1882-1887), member of the Republican National Committee (1904-1912), and president of the American Bar Association (1912-1913).
Lawler was an attorney from St. Paul, former U.S. Attorney (1886-1891), and former Mayor of St. Paul (1908-1910). He was also the Democratic nominee for U.S. Senator in 1893 and 1912, Democratic candidate for Governor in 1914, and Democratic nominee for the 4th CD in 1924.
Calderwood was a resident of Minneapolis, state chair of the Prohibition Party, Prohibition nominee for HD 30 in 1894, for HD 39 in 1904, 1906, 1908, and 1910, for the at-large U.S. House seat in 1912, for Governor in 1914, and for the U.S. Senate in 1918 (on the National ticket). He was also a Farmer-Labor candidate for Lieutenant Governor in 1924.