Horizon · our Election Day forecast: polls, plus fundamentals like incumbency, fundraising and past results.

Pulse · polls only: where the races stand today, with no fundamentals and wider uncertainty.

What's the difference?

Wyoming › U.S. Senate · November 3, 2026 · Updated Oct 16, 2026

U.S. Senate in Wyoming

Hageman is very likely to win: Hageman wins in more than 99 of every 100 simulations.

Byrd (D)
<1%
chance of winning
Hageman (R)
>99%
Average margin
R+36.4
80% of outcomes
R+47 to R+26
Partisan lean
R+47
Polls
No pollsmodel only

Hageman is very likely to win: Hageman wins in more than 99 of every 100 simulations.

Byrd (D)
<1%
chance of winning
Hageman (R)
>99%
Average margin
R+39.6
80% of outcomes
R+52 to R+28
Partisan lean
R+47
Polls
No pollsmodel only

Range of outcomes

R+36.4R+60R+40R+20EvenD+20D+40D+60
R+39.6R+60R+40R+20EvenD+20D+40D+60

How the odds have moved

Chance of winning by forecast date.

0%25%50%75%100%AugSepOctNovNov 3Byrd <1%Hageman >99%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

0%25%50%75%100%AugSepOctNovNov 3Byrd <1%Hageman >99%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

The candidates

Democratic

James W. Byrd

Former state representative from the 44th district (2009–2019) and nominee for secretary of state in 2018

Experience
State legislature
Raised
$22.6K
From individuals
$21.6K
Spent
$23.3K
Cash on hand
$356

Money: FEC, through Jul 29, 2026.

Profile and career · Wikipedia

Republican

Harriet Hageman

U.S. representative from Wyoming's at-large congressional district (2023–present) and candidate for governor in 2018

Experience
Statewide office or Congress
Raised
$2.7M
From individuals
$1.4M
Spent
$3M
Cash on hand
$593.9K

Money: FEC, through Sep 30, 2026.

Profile and career · Wikipedia

What goes into the forecast

Every ingredient's estimate of the final margin.

National environment
D+9.5Election Day forecast; federal races run in it
← RepublicanDemocratic →Lean + environmentUsual vote, shifted by the national and state moodR+39.2Fundamentals modelAdds incumbency, past results, money andexperienceR+36.3Polls in similar placesPolling of similar races in Wyoming and look-alikeplacesR+36.7Polling averageNo polls of this racenot availableHorizon forecastPolls + fundamentals, projected to Election DayR+36.5Pulse forecastPolls (and polling of similar places) only, todayR+39.7

Each estimate is a margin before national and statewide uncertainty is simulated. Horizon blends polls, fundamentals and a little of the similar-places estimate, weighting each by how precise it is; Pulse uses polls and similar places only.

Fundamentals inputs
Incumbency (+1 D, −1 R)0
Fundraising edge (log ratio of individual money)-1.23
Elected-experience edge-0.33
First-term incumbent0
Seat's last result vs. expectation2.49
Incumbent's last result vs. expectation0

Polls

No public polls of this race. The forecast relies on fundamentals and on polling of similar places.

The state

Lean R+47: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentR+51.4R+53.6 vs. nation2020 presidentR+45.0R+49.5 vs. nation2024 presidentR+47.0R+45.5 vs. nation

Who lives here

Population
582,397
Adults with a B.A.+
31%
White, no degree
57%of adults
  • White 81%
  • Hispanic 11%
  • Black 1%
  • Asian 1%
  • Other / multiracial 6%

American Community Survey 2020–2024, aggregated from census tracts.

Past results

2024 President Vote in this state

262,160 two-party votes · R+47.0 · R+45.5 vs. the nation
✓ Donald Trump (R)73.5%
Kamala Harris (D)26.5%

2020

271,937 votes · R+46.3
✓ Cynthia M. Lummis (R)72.8%
Merav Ben David (D)26.8%

2020 President Vote in this state

267,050 two-party votes · R+45.0 · R+49.5 vs. the nation
✓ Donald Trump (R)72.5%
Joe Biden (D)27.5%

2016 President Vote in this state

230,392 two-party votes · R+51.4 · R+53.6 vs. the nation
✓ Donald Trump (R)75.7%
Hillary Clinton (D)24.3%

2014

167,919 votes · R+61.1
✓ Michael B. Enzi (R)72.4%
Charlie Hardy (D)17.5%
Curt Gottshall (I)7.9%
Joseph S. Porambo (L)2.2%

2008

249,677 votes · R+51.4
✓ Michael B. Enzi (R)75.7%
Chris Rothfuss (D)24.3%

2002

183,280 votes · R+45.9
✓ Michael B. Enzi (R)73.0%
Joyce Jansa Corcoran (D)27.0%