Question: The 1916 Montana gubernatorial election took place on November 7, 1916, after comfortably winning the Democratic primary, he advanced to the general election, where he faced Frank J. Edwards, the former Mayor of Helena, the capital city of the U.S. state of Montana, and the county seat of which county?
Sentence (from "Helena, Montana"): Over $3.6 billion of gold was extracted in the city limits over a duration of two decades, making it one of the wealthiest cities in the United States by the late nineteenth century.
Relevant evidence: No