2020 Montana gubernatorial election
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The 2020 Montana gubernatorial election was held on November 3, 2020, to elect the next governor of Montana, concurrently with the U.S. presidential election, as well as elections to the U.S. Senate and the House of Representatives and various state and local elections. It resulted in voters selecting Greg Gianforte over Mike Cooney. Incumbent Democratic governor Steve Bullock was term-limited and could not seek a third consecutive term in office, and he ran unsuccessfully for Montana's Class II Senate seat.[2]
November 3, 2020
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| Turnout | 81.33% | |||||||||||||||||||
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Gianforte: 40–50% 50–60% 60–70% 70–80% 80–90% >90% Cooney: 40–50% 50–60% 60–70% 70–80% 80–90% >90% No data | ||||||||||||||||||||
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Bullock's lieutenant governor, Mike Cooney, was the Democratic nominee, while the Republican nominee was Montana's at-large representative Greg Gianforte, who won the election, making him the first Republican governor of Montana since Judy Martz left office in 2005.[3] This was the only gubernatorial seat to change partisan control in the 2020 elections. This election marked the first time since the 1920s that Republicans controlled all state constitutional offices and a majority of the legislature.[4]
Democratic primary
Candidates
Nominee
- Mike Cooney, lieutenant governor of Montana and former Secretary of State of Montana and candidate in 2000[5]
- Running mate: Casey Schreiner, minority leader of the Montana House of Representatives[6]
Eliminated in primary
- Whitney Williams, businesswoman and daughter of former U.S. Representative Pat Williams[7]
- Running mate: Buzz Mattelin, farmer and president of the National Barley Growers Association
Withdrawn
- Reilly Neill, former state representative[8][9]
- Casey Schreiner, minority leader of the Montana House of Representatives (running for lieutenant governor)[10][11]
Declined
- Ryan Busse, businessman[12]
- Wilmot Collins, mayor of Helena and former 2020 candidate for the U.S. Senate[13]
- John Heenan, attorney and candidate for Montana's at-large congressional district in 2018[14]
- Michael Punke, writer and former U.S. ambassador to the World Trade Organization[15][16]
- Brian Schweitzer, former governor of Montana (endorsed Williams)[17]
- Kathleen Williams, former state representative and nominee for Montana's at-large congressional district in 2018 (running for the U.S. House)[18]
Endorsements
Mike Cooney
Statewide politicians
- Jacob Bachmeier, state representative[19]
- Steve Bullock, incumbent governor of Montana and former candidate for president in 2020[20]
- Mary Ann Dunwell, state representative[21]
- Moffie Funk, state representative[19]
Federal politicians
- Jon Tester, U.S. senator (MT)[22]
Organizations
- AFL–CIO Montana[citation needed]
- International Brotherhood of Teamsters Local 190[23]
Whitney Williams
Statewide politicians
Local politicians
Organizations
Polling
Polls with a sample size of <100 have their sample size entries marked in red to indicate a lack of reliability.
| Poll source | Date(s) administered |
Sample size[a] |
Margin of error |
Mike Cooney |
Reilly Neill |
Casey Schreiner |
Whitney Williams |
Other / Undecided |
|---|---|---|---|---|---|---|---|---|
| Montana State University Billings[26] | October 7–16, 2019 | 40 (LV) | – | 19% | 2% | 6% | 11% | 62% |
Results

Cooney
- 50–60%
- 60–70%
- 70–80%
Williams
- 50–60%
Tie
- 50–60%
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Mike Cooney | 81,527 | 54.86% | |
| Democratic | Whitney Williams | 67,066 | 45.14% | |
| Total votes | 148,593 | 100.00% | ||
Republican primary
Candidates
Nominee
- Greg Gianforte, incumbent U.S. representative for Montana's at-large congressional district and nominee for governor of Montana in 2016[28][29]
- Running mate: Kristen Juras, businesswoman and attorney[30]
Eliminated in primary
- Running mate: Jon Knokey, former state representative
- Running mate: Kenneth Bogner, state senator[34]
Withdrawn
- Gary Perry, former state senator[33][35]
- Corey Stapleton, Secretary of State of Montana, candidate for governor of Montana in 2012 and candidate for the U.S. House in 2014 (running for the U.S. House)[36]
- Pete Ziehli[33][35]
Declined
- Matt Rosendale, Montana State Auditor and nominee for the U.S. Senate in 2018 (running for the U.S. House)[37]
- Ryan Zinke, former United States Secretary of Interior and former U.S. representative for Montana's at-large congressional district[38][39]
Endorsements
Greg Gianforte
Polling
Polls with a sample size of <100 have their sample size entries marked in red to indicate a lack of reliability.
| Poll source | Date(s) administered |
Sample size[a] |
Margin of error |
Tim Fox |
Greg Gianforte |
Albert Olszewski |
Other / Undecided |
|---|---|---|---|---|---|---|---|
| Montana State University Billings[26] | October 7–16, 2019 | 99 (LV) | – | 25% | 33% | 9% | 32% |
| Gravis Marketing[43] | August 28–30, 2019 | 433 (RV) | ± 4.7% | 29% | 56% | 15% | – |
| Moore Information[44][A] | July 7–10, 2019 | 400 (LV) | ± 5.0% | 17% | 56% | 5% | 23% |
Results

Gianforte
- 40–50%
- 50–60%
- 60–70%
- 70–80%
Fox
- 40–50%
- 50–60%
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | Greg Gianforte | 119,247 | 53.44% | |
| Republican | Tim Fox | 60,823 | 27.26% | |
| Republican | Albert Olszewski | 43,080 | 19.30% | |
| Total votes | 223,150 | 100.00% | ||
Other candidates
Libertarian Party
Nominee
- Lyman Bishop, founder and CEO of Hoplite Armor[45]
- Running mate: John Nesper
Withdrawn
Green Party
Disqualified
Results
General election
Debate
| Host | Date & Time | Link(s) | Participants | |
|---|---|---|---|---|
| Mike Cooney (D) | Greg Gianforte (R) | |||
| Montana PBS | October 6, 2020 6:00pm MDT |
[50] | Present | Present |
Predictions
| Source | Ranking | As of |
|---|---|---|
| The Cook Political Report[51] | Tossup | October 23, 2020 |
| Inside Elections[52] | Tossup | October 28, 2020 |
| Sabato's Crystal Ball[53] | Lean R (flip) | November 2, 2020 |
| Politico[54] | Lean R (flip) | November 2, 2020 |
| Daily Kos[55] | Lean R (flip) | October 28, 2020 |
| RCP[56] | Tossup | November 2, 2020 |
| 270towin[57] | Tossup | November 2, 2020 |
Endorsements
Mike Cooney (D)
Statewide and local politicians
- Jacob Bachmeier, state representative[19]
- Steve Bullock, governor of Montana and former candidate for president in 2020[20]
- Mary Ann Dunwell, state representative[21]
- Moffie Funk, state representative[19]
Federal politicians
- Jon Tester, U.S. senator (MT)[22]
Organizations
- AFL–CIO Montana[citation needed]
- International Brotherhood of Teamsters Local 190[23]
- Montana Federation of Public Employees[citation needed]
Greg Gianforte (R)
U.S. presidents
Individuals
- Donald Trump Jr., businessman, son of President Donald Trump[40]
Organizations
Polling
View source data.
| Poll source | Date(s) administered |
Sample size[a] |
Margin of error |
Mike Cooney (D) |
Greg Gianforte (R) |
Other / Undecided |
|---|---|---|---|---|---|---|
| Change Research[59] | October 29 – November 2, 2020 | 920 (LV) | ± 3.5% | 44% | 48% | 6%[b] |
| Montana State University Billings[60] | October 19–24, 2020 | 546 (LV) | ± 4.2% | 45% | 45% | 11%[c] |
| Siena College/NYT Upshot[61] | October 18–20, 2020 | 758 (LV) | ± 4.4% | 44% | 48% | 8%[d] |
| Strategies 360/NBCMT[62] | October 15–20, 2020 | 500 (LV) | ± 4.4% | 41% | 48% | 11%[e] |
| RMG Research/PoliticalIQ[63] | October 15–18, 2020 | 800 (LV) | ± 3.5% | 45%[f] | 48% | 5%[g] |
| 47%[h] | 46% | 5%[i] | ||||
| 43%[j] | 50% | 5%[k] | ||||
| Emerson College[64] | October 4–7, 2020 | 500 (LV) | ± 3.7% | 41% | 54% | 5%[l] |
| Montana State University Bozeman[65] | September 14 – October 2, 2020 | 1,605 (LV) | ± 3.9% | 42% | 47% | 11%[m] |
| Siena College/NYT Upshot[66] | September 14–16, 2020 | 625 (LV) | ± 4.8% | 39% | 45% | 16%[n] |
| Global Strategy Group (D)[67] | August 18–23, 2020 | 600 (LV) | – | 46% | 47% | – |
| Emerson College[68] | July 31 – August 2, 2020 | 584 (LV) | ± 4.0% | 41% | 50% | 10%[o] |
| Civiqs/Daily Kos[69] | July 11–13, 2020 | 873 (RV) | ± 4.2% | 44% | 47% | 9%[p] |
| Public Policy Polling[70][B] | July 9–10, 2020 | 1,224 (V) | ± 2.8% | 42% | 46% | 12%[q] |
| University of Montana[71] | June 17–26, 2020 | 517 (RV) | ± 4.3% | 36% | 46% | 18%[r] |
| The Progress Campaign (D)[72] | April 14–21, 2020 | 1,712 (RV) | ± 4.6% | 41% | 43% | 16%[s] |
Hypothetical polling
with Mike Cooney, Tim Fox, Greg Gianforte, Albert Olszewski, Ron Vandevender and Whitney Williams
| Poll source | Date(s) administered |
Sample size[a] |
Margin of error |
Democratic candidates |
Republican candidates |
Ron Vandevender (L) |
|---|---|---|---|---|---|---|
| University of Montana[73] | February 12–22, 2020 | 498 (LV) | ± 4.4% | 35.1%[t] | 61.7%[u] | 1.3% |
with Mike Cooney, Tim Fox, Greg Gianforte, Reilly Neill, Albert Olszewski, Gary Perry, Casey Schreiner and Whitney Williams
| Poll source | Date(s) administered |
Sample size[a] |
Margin of error |
Democratic candidates |
Republican candidates |
|---|---|---|---|---|---|
| University of Montana[74] | September 26 – October 3, 2019 | 303 (RV) | ± 5.6% | 40%[v] | 60.1%[w] |
with Tim Fox, Matt Rosendale, Corey Stapleton, Kathleen Williams and Whitney Williams
Results
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Republican | 328,548 | 54.43% | +8.08% | ||
| Democratic | 250,860 | 41.56% | −8.69% | ||
| Libertarian |
|
24,179 | 4.01% | +0.61% | |
| Write-in | 21 | 0.00% | N/A | ||
| Total votes | 603,608 | 100.00% | |||
| Turnout | 612,075 | 81.33% | |||
| Registered electors | 752,538 | ||||
| Republican gain from Democratic | |||||
By county
| County[76][77] | Mike Cooney Democratic |
Greg Gianforte Republican |
Various candidates Other parties |
Margin | Total
votes | ||||
|---|---|---|---|---|---|---|---|---|---|
| # | % | # | % | # | % | # | % | ||
| Beaverhead | 1,668 | 29.49% | 3,779 | 66.81% | 209 | 3.70% | 2,111 | 37.32% | 5,656 |
| Big Horn | 2,513 | 52.42% | 2,078 | 43.35% | 203 | 4.23% | –435 | –9.07% | 4,794 |
| Blaine | 1,619 | 51.94% | 1,365 | 43.79% | 133 | 4.27% | –254 | –8.15% | 3,117 |
| Broadwater | 928 | 22.64% | 3,032 | 73.97% | 139 | 3.39% | 2,104 | 51.33% | 4,099 |
| Carbon | 2,498 | 35.30% | 4,303 | 60.81% | 275 | 3.89% | 1,805 | 25.51% | 7,076 |
| Carter | 91 | 10.62% | 748 | 87.28% | 18 | 2.10% | 657 | 76.66% | 857 |
| Cascade | 15,922 | 39.97% | 22,221 | 55.79% | 1,690 | 4.24% | 6,299 | 15.81% | 39,833 |
| Chouteau | 1,048 | 35.26% | 1,816 | 61.10% | 108 | 3.63% | 768 | 25.84% | 2,972 |
| Custer | 1,619 | 27.58% | 3,971 | 67.65% | 280 | 4.77% | 2,352 | 40.07% | 5,870 |
| Daniels | 217 | 21.51% | 768 | 76.11% | 24 | 2.38% | 551 | 54.61% | 1,009 |
| Dawson | 1,124 | 23.29% | 3,524 | 73.02% | 178 | 3.69% | 2,400 | 49.73% | 4,826 |
| Deer Lodge | 2,747 | 56.37% | 1,881 | 38.60% | 245 | 5.03% | –866 | –17.77% | 4,873 |
| Fallon | 218 | 14.02% | 1,288 | 82.83% | 49 | 3.15% | 1,070 | 68.81% | 1,555 |
| Fergus | 1,567 | 24.11% | 4,737 | 72.89% | 195 | 3.00% | 3,170 | 48.78% | 6,499 |
| Flathead | 20,387 | 34.08% | 37,213 | 62.20% | 2,225 | 3.72% | 16,826 | 28.13% | 59,825 |
| Gallatin | 36,788 | 51.84% | 31,368 | 44.21% | 2,802 | 3.95% | –5,420 | –7.64% | 70,958 |
| Garfield | 48 | 5.90% | 751 | 92.37% | 14 | 1.72% | 703 | 86.47% | 813 |
| Glacier | 3,730 | 65.62% | 1,709 | 30.07% | 245 | 4.31% | –2,021 | –35.56% | 5,684 |
| Golden Valley | 80 | 15.90% | 409 | 81.31% | 14 | 2.78% | 329 | 65.41% | 503 |
| Granite | 659 | 31.47% | 1,348 | 64.37% | 87 | 4.15% | 689 | 32.90% | 2,094 |
| Hill | 3,146 | 43.80% | 3,642 | 50.71% | 394 | 5.49% | 496 | 6.91% | 7,182 |
| Jefferson | 2,791 | 34.16% | 5,097 | 62.38% | 283 | 3.46% | 2,306 | 28.22% | 8,171 |
| Judith Basin | 281 | 20.88% | 1,017 | 75.56% | 48 | 3.57% | 736 | 54.68% | 1,346 |
| Lake | 6,885 | 41.50% | 8,913 | 53.72% | 794 | 4.79% | 2,028 | 12.22% | 16,592 |
| Lewis and Clark | 21,022 | 49.53% | 19,969 | 47.05% | 1,449 | 3.41% | –1,053 | –2.48% | 42,440 |
| Liberty | 268 | 24.75% | 788 | 72.76% | 27 | 2.49% | 520 | 48.01% | 1,083 |
| Lincoln | 3,001 | 25.64% | 8,279 | 70.72% | 426 | 3.64% | 5,278 | 45.09% | 11,706 |
| Madison | 1,877 | 30.83% | 3,992 | 65.57% | 219 | 3.60% | 2,115 | 34.74% | 6,088 |
| McCone | 165 | 14.77% | 921 | 82.45% | 31 | 2.78% | 756 | 67.68% | 1,117 |
| Meagher | 256 | 23.02% | 823 | 74.01% | 33 | 2.97% | 567 | 50.99% | 1,112 |
| Mineral | 706 | 27.66% | 1,715 | 67.20% | 131 | 5.13% | 1,009 | 39.54% | 2,552 |
| Missoula | 43,426 | 60.66% | 25,448 | 35.55% | 2,711 | 3.79% | –17,978 | –25.11% | 71,585 |
| Musselshell | 450 | 15.68% | 2,318 | 80.77% | 102 | 3.55% | 1,868 | 65.09% | 2,870 |
| Park | 5,364 | 46.32% | 5,798 | 50.07% | 418 | 3.61% | 434 | 3.75% | 11,580 |
| Petroleum | 44 | 12.57% | 299 | 85.43% | 7 | 2.00% | 255 | 72.86% | 350 |
| Phillips | 412 | 17.36% | 1,908 | 80.40% | 53 | 2.23% | 1,496 | 63.04% | 2,373 |
| Pondera | 912 | 30.43% | 1,981 | 66.10% | 104 | 3.47% | 1,069 | 35.67% | 2,997 |
| Powder River | 162 | 14.35% | 943 | 83.53% | 24 | 2.13% | 781 | 69.18% | 1,129 |
| Powell | 849 | 26.64% | 2,212 | 69.41% | 126 | 3.95% | 1,363 | 42.77% | 3,187 |
| Prairie | 160 | 21.92% | 544 | 74.52% | 26 | 3.56% | 384 | 52.60% | 730 |
| Ravalli | 8,883 | 31.17% | 18,557 | 65.11% | 1,063 | 3.73% | 9,674 | 33.94% | 28,503 |
| Richland | 1,017 | 17.67% | 4,506 | 78.31% | 231 | 4.01% | 3,489 | 60.64% | 5,754 |
| Roosevelt | 1,961 | 48.94% | 1,859 | 46.39% | 187 | 4.67% | –102 | –2.55% | 4,007 |
| Rosebud | 1,236 | 32.99% | 2,363 | 63.06% | 148 | 3.95% | 1,127 | 30.08% | 3,747 |
| Sanders | 1,870 | 24.65% | 5,346 | 70.47% | 370 | 4.88% | 3,476 | 45.82% | 7,586 |
| Sheridan | 634 | 31.45% | 1,300 | 64.48% | 82 | 4.07% | 666 | 33.04% | 2,016 |
| Silver Bow | 11,495 | 61.23% | 6,490 | 34.57% | 788 | 4.20% | –5,005 | –26.66% | 18,773 |
| Stillwater | 1,263 | 22.06% | 4,292 | 74.96% | 171 | 2.99% | 3,029 | 52.90% | 5,726 |
| Sweet Grass | 553 | 22.59% | 1,801 | 73.57% | 94 | 3.84% | 1,248 | 50.98% | 2,448 |
| Teton | 1,053 | 28.58% | 2,497 | 67.76% | 135 | 3.66% | 1,444 | 39.19% | 3,685 |
| Toole | 468 | 22.10% | 1,546 | 72.99% | 104 | 4.91% | 1,078 | 50.90% | 2,118 |
| Treasure | 89 | 19.35% | 358 | 77.83% | 13 | 2.83% | 269 | 58.48% | 460 |
| Valley | 1,182 | 27.82% | 2,899 | 68.24% | 167 | 3.93% | 1,717 | 40.42% | 4,248 |
| Wheatland | 251 | 23.68% | 767 | 72.36% | 42 | 3.96% | 516 | 48.68% | 1,060 |
| Wibaux | 105 | 17.95% | 465 | 79.49% | 15 | 2.56% | 360 | 61.54% | 585 |
| Yellowstone | 31,152 | 37.18% | 48,586 | 57.99% | 4,051 | 4.83% | 17,434 | 20.81% | 83,789 |
| Totals | 250,860 | 41.56% | 328,548 | 54.43% | 24,200 | 4.01% | 77,688 | 12.87% | 603,608 |
Counties that flipped from Democratic to Republican
- Cascade (largest city: Great Falls)
- Hill (largest city: Havre)
- Lake (largest city: Polson)
- Park (largest city: Livingston)
Notes
- Key:
A – all adults
RV – registered voters
LV – likely voters
V – unclear - Bishop (L) with 3%; "Don't recall" with 2%; Did not vote with 1%; Would not vote with 0%; Undecided with 1%
- Bishop (L) with 2%; Undecided with 9%
- Bishop (L) with 4%; "Someone else" and would not vote with 0%; "Undecided/Refused" with 4%
- Bishop (L) with 4%; Undecided with 7%
- Standard VI response
- "Some other candidate" with 2%; Undecided with 3%
- Results generated with high Democratic turnout model
- "Some other candidate" with 2%; Undecided with 3%
- Results generated with high Republican turnout model
- "Some other candidate" with 2%; Undecided with 3%
- "Someone else" with 1%; Undecided with 4%
- "Other" with 4% (including Bishop (L) with <2%); Undecided with 7%
- Bishop (L) with 4%; Barb (G) and would not vote with 1%; "someone else" with 0%; "Undecided/Refused" with 10%
- "Someone else" with 3%; Undecided with 7%
- "Someone else" with 5%; Undecided with 4%
- Undecided with 12%
- Undecided with 18.3%
- Undecided with 16%
- Cooney with 21%; Williams with 14.1%
- Gianforte with 35%; Fox with 21.6%; Olszewski with 6.9%
- Cooney with 23%; Williams with 7.9%; Schreiner with 6%; Neill with 3.1%
- Gianforte with 35.1%; Fox with 16.1%; Olszewski with 8.1%; Perry with 0.8%
- Kathleen Williams with 26.6%; Cooney with 5.2%; Whitney Williams with 0.6%
- Fox with 16.8%; Gianforte with 16.1%; Stapleton with 8%; Rosendale with 7.5%
- "Someone else" with 15.4%; "none/do not plan to vote" with 3.8%
Partisan clients