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 County results Walsh: 30–40% 40–50% 50–60% Lanstrum: 30–40% 40–50% 50–60% Rankin: 30–40% 40–50% No Data/Vote: | |||||||||||||||||||||
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| Elections in Montana | ||||||||
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The1918 United States Senate election in Montana took place on November 5, 1918. Incumbent United States SenatorThomas J. Walsh, who was first elected to the Senate in 1912, ran for re-election. He won theDemocratic primary uncontested, and was opposed in the general election by Oscar M. Lanstrum, a formerState Representative and theRepublican nominee, andJeannette Rankin, one of twoUnited States representatives fromMontana's at-large congressional district and the nominee of theNational Party. Walsh narrowly won his second term in the Senate.
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Thomas J. Walsh (incumbent) | 28,553 | 100.00% | |
| Total votes | 28,553 | 100.00% | ||
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | Oscar M. Lanstrum | 18,805 | 41.59% | |
| Republican | Jeannette Rankin | 17,091 | 37.80% | |
| Republican | Harry H. Parsons | 5,878 | 13.00% | |
| Republican | Edmund Nichols | 3,443 | 7.61% | |
| Total votes | 45,217 | 100.00% | ||
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | Thomas J. Walsh (incumbent) | 46,160 | 41.07% | −0.10% | |
| Republican | Oscar M. Lanstrum | 40,229 | 35.79% | +9.06% | |
| National | Jeannette Rankin | 26,013 | 23.14% | ||
| Majority | 5,931 | 5.28% | −3.79% | ||
| Turnout | 112,402 | ||||
| Democratichold | Swing | ||||
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