2018 United States Senate election in New Mexico

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The 2018 United States Senate election in New Mexico took place on November 6, 2018, to elect a member of the United States Senate to represent the state of New Mexico, concurrently with other elections to the United States Senate, elections to the United States House of Representatives, and various state and local elections.

Quick facts Turnout, Nominee ...
2018 United States Senate election in New Mexico

 2012
November 6, 2018
2024 
Turnout55.0%
 
Nominee Martin Heinrich Mick Rich Gary Johnson
Party Democratic Republican Libertarian
Popular vote 376,998 212,813 107,201
Percentage 54.09% 30.53% 15.38%

Heinrich:      30–40%      40–50%      50–60%      60–70%      70–80%      80–90%      >90%
Rich:      30–40%      40–50%      50–60%      60–70%      70–80%      80–90%      >90%
Tie:      40–50%      No data

U.S. senator before election

Martin Heinrich
Democratic

Elected U.S. Senator

Martin Heinrich
Democratic

Close

Incumbent Democratic Senator Martin Heinrich won re-election to a second term.[1] His opponents were Republican nominee and businessman Mick Rich and Libertarian nominee Gary Johnson, a two-term Republican governor of New Mexico and two-time candidate for president of the United States.

The candidate filing deadline was March 13, 2018. The Republican and Democratic primary elections were held June 5, 2018.[2] Johnson's results were the highest results for a Libertarian candidate in New Mexico history.

Democratic primary

Candidates

Nominee

Results

More information Party, Candidate ...
Democratic primary results[3]
Party Candidate Votes %
Democratic Martin Heinrich (incumbent) 152,145 100%
Total votes 152,145 100%
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Republican primary

Candidates

Nominee

  • Mick Rich, businessman[4]

Declined

Results

More information Party, Candidate ...
Republican primary results[3]
Party Candidate Votes %
Republican Mick Rich 67,502 100%
Total votes 67,502 100%
Close

Libertarian primary

On July 30, 2018, nominee Aubrey Dunn withdrew from the race. On August 4, former governor Gary Johnson was formally nominated by the Libertarian Party of New Mexico as Dunn's replacement.[8] Johnson accepted his party's nomination on August 13.[9]

Candidates

Declared

Withdrew nomination

Results

More information Party, Candidate ...
Libertarian primary results[3]
Party Candidate Votes %
Libertarian Aubrey Dunn 623 100%
Total votes 623 100%
Close

General election

Debates

Endorsements

Mick Rich (R)
Governors
U.S. representatives
Individuals
Organizations
Gary Johnson (L)
Governors
U.S. senators
Statewide officials
State representatives
Local officeholders
Journalists
Newspapers
Organizations
  • Libertarian Youth Caucus[37]
  • New Mexico Open Primaries[38]

Predictions

More information Source, Ranking ...
Source Ranking As of
The Cook Political Report[39] Safe D October 26, 2018
Inside Elections[40] Safe D November 1, 2018
Sabato's Crystal Ball[41] Safe D November 1, 2018
Fox News[42] Likely D November 1, 2018
CNN[43] Safe D November 1, 2018
RealClearPolitics[44] Safe D November 5, 2018
FiveThirtyEight[45] Safe D November 6, 2018
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^Highest rating given

Polling

Graphical summary

%support01020304050607/31/20188/30/201810/26/2018HeinrichRichJohnsonUndecidedOpinion polling for the 2018 United States S...

Polls

More information Poll source, Date(s) administered ...
Poll source Date(s)
administered
Sample
size
Margin
of error
Martin
Heinrich (D)
Mick
Rich (R)
Gary
Johnson (L)
Undecided
Research Co.[46] November 1–3, 2018 450 ± 4.6% 47% 33% 11% 9%
Carroll Strategies[47] November 1, 2018 1,202 ± 2.8% 51% 38% 8% 3%
Research & Polling, Inc.[48] October 26 – November 1, 2018 993 ± 3.1% 51% 31% 12% 6%
Emerson College[49] October 24–26, 2018 936 ± 3.4% 48% 32% 16% 5%
Pacific Market Research[50] October 19–24, 2018 400 ± 4.9% 40% 28% 22% 11%
NSON Opinion Strategy (L)[51] September 20–24, 2018 932 36% 10% 28% 26%
In Lux Research (L-Elect Liberty PAC)[52] September 16–17, 2018 900 38% 10% 28% 24%
Research & Polling, Inc.[53] September 7–13, 2018 966 ± 3.1% 47% 26% 16%
In Lux Research (L-Elect Liberty PAC)[54] August 2018 900 38% 13% 28% 21%
Emerson College[55] August 17–18, 2018 500 ± 4.6% 39% 11% 21% 30%
GQR Research (D-TMI)[56] August 2–5, 2018 500 ± 4.4% 48% 33% 17% 2%
GBA Strategies (D-Heinrich)[57] August 1–5, 2018 800 ± 3.5% 47% 29% 22%
The Tarrance Group (R-Rich)[58] July 31 – August 2, 2018 500 ± 4.5% 44% 30% 20% 6%
NSON Opinion Strategy (L)[59] July 2018 500 39% 25% 23% 12%
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Hypothetical polling

with Mick Rich

More information Poll source, Date(s) administered ...
Poll source Date(s)
administered
Sample
size
Margin
of error
Martin
Heinrich (D)
Mick
Rich (R)
Undecided
The Tarrance Group (R-Rich)[58] July 31 – August 2, 2018 500 ± 4.5% 55% 37% 8%
NSON Opinion Strategy (L)[60] July 2018 500 47% 29%
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with Gary Johnson

More information Poll source, Date(s) administered ...
Poll source Date(s)
administered
Sample
size
Margin
of error
Martin
Heinrich (D)
Gary
Johnson (L)
Undecided
GBA Strategies (D-Heinrich)[57] August 1–5, 2018 800 ± 3.5% 50% 38%
In Lux Research (L)[61] July 28–29, 2018 525 40% 42%
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with Aubrey Dunn

More information Poll source, Date(s) administered ...
Poll source Date(s)
administered
Sample
size
Margin
of error
Martin
Heinrich (D)
Mick
Rich (R)
Aubrey
Dunn (L)
Undecided
NSON Opinion Strategy (L)[62] July 2018 500 47% 30% 7% 16%
Carroll Strategies[63] June 15–16, 2018 1,199 ± 2.8% 50% 39% 5% 6%
Close

Results

More information Party, Candidate ...
2018 United States Senate election in New Mexico
Party Candidate Votes % ±%
Democratic Martin Heinrich (incumbent) 376,998 54.09% +3.08%
Republican Mick Rich 212,813 30.53% −14.75%
Libertarian Gary Johnson 107,201 15.38% N/A
Total votes 697,012 100.00% N/A
Democratic hold
Close

By county

More information Martin Heinrich Democrat, Mick Rich Republican ...
Vote breakdown by county[64]
Martin Heinrich
Democrat
Mick Rich
Republican
Gary Johnson
Libertarian
Total
County Votes % Votes % Votes % Votes
Bernalillo140,08258.1%61,93225.7%39,27416.3%241,288
Catron55026.9%1,07558.4%21711.8%1,842
Chaves5,27931.7%8,72752.4%2,66616.0%16,672
Cibola3,92455.1%1,84225.9%1,35519.0%7,121
Colfax2,33349.9%1,61534.5%73115.6%4,679
Curry2,79327.4%5,89657.9%1,49814.7%10,187
De Baca26733.2%34242.5%19624.4%805
Doña Ana34,65157.0%18,10129.8%8,02913.2%60,781
Eddy4,83430.7%8,82656.0%2,09513.3%15,755
Grant6,76357.3%3,59830.5%1,44212.2%11,803
Guadalupe1,09465.2%29217.4%29217.4%1,678
Harding19841.2%19941.4%8417.5%481
Hidalgo79049.5%60738.1%19812.4%1,595
Lea3,33124.1%8,88264.2%1,62811.8%13,841
Lincoln2,61733.3%4,12252.5%1,11114.2%7,850
Los Alamos5,79856.3%2,57625.0%1,92618.7%10,300
Luna3,00548.9%2,31337.7%82313.4%6,141
McKinley12,40967.5%2,91515.9%3,04916.6%18,373
Mora1,56467.4%37216.0%38616.6%2,322
Otero6,37037.2%8,46049.4%2,29113.4%17,121
Quay1,01632.9%1,53449.7%53717.4%3,087
Rio Arriba8,77368.8%1,94515.3%2,03516.0%12,753
Roosevelt1,27727.6%2,60656.3%75016.2%4,633
San Juan12,48533.4%18,00248.2%6,87618.4%37,363
San Miguel6,60971.6%1,29814.1%1,32314.3%9,230
Sandoval28,19850.9%17,78532.1%9,39717.0%55,380
Santa Fe49,99474.4%9,54614.2%7,64211.4%67,182
Sierra1,91740.5%2,04843.3%76716.2%4,732
Socorro3,40954.7%1,70027.3%1,12918.1%6,238
Taos10,83874.7%1,55610.7%2,11214.6%14,506
Torrance1,98236.9%2,43345.3%95117.7%5,366
Union33422.8%87860.0%25217.2%1,464
Valencia11,51447.1%8,79035.0%4,13916.9%24,443
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Counties that flipped from Republican to Democratic

By congressional district

Heinrich won all three congressional districts.[65]

More information District, Heinrich ...
District Heinrich Rich Johnson Representative
1st 57.55% 26.28% 16.17% Deb Haaland
2nd 45.56% 40.17% 14.27% Xochitl Torres Small
3rd 57.52% 27.0% 15.48% Ben Ray Luján
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References

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