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United States · Election results history · 2018 House · Montana
Election 2018 Results

Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.

2018 US House elections in Montana

Montana elected one member of the House in 2018. Greg Gianforte (Republican) beat Kathleen Williams (Democrat) in Montana in 2018, 50.9% to 46.2%, a margin of 4.6 points and 23,377 votes.

In the House vote by county, Republicans led in 45 of the 56 counties and Democrats in 11. The largest, Yellowstone, cast 69,372 votes and went to the Republican by 11.2 points. The closest was Park, where 30 votes separated the two parties.

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Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.

Every district

DistrictDemocratVotesRepublicanVotesOthersMargin
At large Kathleen Williams233,284 (46.2%) Greg Gianforte256,661 (50.9%) 14,476 R+4.6

The House vote in every county

CountyDemocratRepublicanOthersTotalMargin
Yellowstone 29,612 42.7% 37,399 53.9% 2,361 69,372 R+11.2
Missoula 39,416 64.0% 20,567 33.4% 1,622 61,605 D+30.6
Gallatin 31,297 55.9% 23,157 41.4% 1,523 55,977 D+14.5
Flathead 18,051 37.8% 28,450 59.5% 1,277 47,778 R+21.8
Lewis and Clark 18,798 52.9% 15,686 44.1% 1,046 35,530 D+8.8
Cascade 15,826 46.6% 17,219 50.7% 925 33,970 R+4.1
Ravalli 8,289 35.5% 14,495 62.0% 598 23,382 R+26.5
Silver Bow 10,822 66.4% 5,032 30.9% 442 16,296 D+35.5
Lake 6,416 46.5% 7,013 50.9% 355 13,784 R+4.3
Park 4,741 48.7% 4,711 48.4% 277 9,729 D+0.3
Lincoln 2,628 28.2% 6,453 69.2% 245 9,326 R+41.0
Jefferson 2,621 38.3% 4,016 58.7% 200 6,837 R+20.4
Hill 3,315 52.0% 2,834 44.4% 231 6,380 D+7.5
Sanders 1,853 30.2% 4,077 66.4% 210 6,140 R+36.2
Carbon 2,442 40.2% 3,450 56.8% 184 6,076 R+16.6
Fergus 1,752 30.2% 3,915 67.4% 139 5,806 R+37.3
Glacier 3,564 71.5% 1,307 26.2% 111 4,982 D+45.3
Madison 1,667 33.5% 3,159 63.5% 145 4,971 R+30.0
Beaverhead 1,681 34.2% 3,113 63.3% 122 4,916 R+29.1
Custer 1,638 33.5% 3,085 63.1% 168 4,891 R+29.6
Stillwater 1,350 27.7% 3,373 69.1% 157 4,880 R+41.5
Big Horn 2,865 61.3% 1,705 36.5% 106 4,676 D+24.8
Richland 962 22.2% 3,260 75.1% 120 4,342 R+52.9
Deer Lodge 2,693 63.7% 1,379 32.6% 155 4,227 D+31.1
Dawson 1,128 27.8% 2,811 69.2% 125 4,064 R+41.4
Valley 1,256 32.4% 2,442 63.0% 178 3,876 R+30.6
Roosevelt 1,865 54.3% 1,476 43.0% 95 3,436 D+11.3
Rosebud 1,349 40.2% 1,918 57.1% 90 3,357 R+16.9
Broadwater 897 27.6% 2,249 69.2% 105 3,251 R+41.6
Teton 1,117 35.4% 1,959 62.2% 76 3,152 R+26.7
Blaine 1,742 58.0% 1,173 39.1% 87 3,002 D+19.0
Powell 859 31.2% 1,806 65.5% 92 2,757 R+34.3
Pondera 1,004 37.3% 1,607 59.6% 84 2,695 R+22.4
Chouteau 1,071 40.4% 1,515 57.1% 66 2,652 R+16.7
Musselshell 502 20.7% 1,833 75.5% 92 2,427 R+54.8
Sweet Grass 580 27.4% 1,475 69.7% 61 2,116 R+42.3
Phillips 451 21.6% 1,588 75.9% 52 2,091 R+54.4
Mineral 702 34.1% 1,286 62.5% 69 2,057 R+28.4
Toole 542 28.4% 1,310 68.7% 56 1,908 R+40.3
Granite 609 33.8% 1,133 62.8% 62 1,804 R+29.0
Sheridan 661 36.7% 1,087 60.4% 52 1,800 R+23.7
Fallon 226 17.7% 1,025 80.4% 24 1,275 R+62.7
Judith Basin 311 26.0% 849 71.1% 34 1,194 R+45.1
McCone 194 18.9% 813 79.1% 21 1,028 R+60.2
Meagher 264 26.9% 680 69.2% 38 982 R+42.4
Liberty 299 30.6% 653 66.9% 24 976 R+36.3
Powder River 172 17.6% 785 80.5% 18 975 R+62.9
Daniels 240 25.4% 684 72.5% 20 944 R+47.0
Wheatland 277 29.8% 631 67.8% 22 930 R+38.1
Carter 100 13.4% 636 85.0% 12 748 R+71.7
Garfield 55 8.1% 606 89.0% 20 681 R+80.9
Prairie 149 22.7% 484 73.9% 22 655 R+51.1
Wibaux 114 21.3% 402 75.3% 18 534 R+53.9
Golden Valley 108 23.8% 323 71.3% 22 453 R+47.5
Treasure 95 22.9% 308 74.2% 12 415 R+51.3
Petroleum 46 14.7% 259 82.7% 8 313 R+68.1

Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

Montana in every House election we hold

YearSeatsHouse vote
2024 D 0, R 2 R+18.8
2022 D 0, R 2 R+18.6
2020 D 0, R 1 R+12.8
2018 D 0, R 1 R+4.6
2016 D 0, R 1 R+15.6
2014 D 0, R 1 R+15.0
2012 D 0, R 1 R+10.5
2010 D 0, R 1 R+26.6
2008 D 0, R 1 R+31.7
2006 D 0, R 1 R+19.7
2004 D 0, R 1 R+31.6
2002 D 0, R 1 R+32.0
2000 D 0, R 1 R+5.2
1998 D 0, R 1 R+8.6
1996 D 0, R 1 R+9.3
1994 D 1, R 0 D+6.4
1992 D 1, R 0 D+3.5
1990 D 1, R 1 R+1.0