The 1928 Montana gubernatorial election took place on November 6, 1928. Incumbent Governor of Montana John E. Erickson, who was first elected governor in 1924, ran for re-election. Erickson only narrowly won the Democratic primary against future Governor Roy E. Ayers, and advanced to the general election, where he was opposed by U.S. Attorney Wellington D. Rankin, the former Attorney General of Montana. Although Herbert Hoover carried the state in a landslide in the presidential election that year, Erickson won re-election to his second term as governor in a landslide over Rankin.
- John E. Erickson, incumbent Governor of Montana
- Roy E. Ayers, former Associate Justice of the Supreme Court of Montana
|Democratic||John E. Erickson (incumbent)||24,304||50.67|
|Democratic||Roy E. Ayers||23,665||49.33|
- Wellington D. Rankin, U.S. Attorney for the District of Montana and former Attorney General of Montana
- Lee Dennis, former chairman of the Montana Railroad and Public Service Commission
- W. J. Paul, former state senator
- J. W. Walker
|Republican||Wellington D. Rankin||30,778||45.58|
|Republican||W. J. Paul||11,337||16.79|
|Republican||J. W. Walker||9,206||13.63|
|Democratic||John E. Erickson (incumbent)||113,635||58.52%||+7.50%|
|Republican||Wellington D. Rankin||79,777||41.08%||-1.51%|
|Socialist||W. R. Duncan||781||0.40%||+0.13%|
- "Report of the Official Canvass of the Vote Cast at the Primary Election, Held in the State of Montana, July 17 A. D. 1928". Montana Secretary of State. Retrieved July 6, 2014.
- "Official Abstract of Votes Cast at the General Election Held in Montana, Nov. 6, 1928". Montana Secretary of State. Retrieved July 6, 2014.