FutureBallotU.S. election forecasts, with every number traced to its source

NC-8 · House

election-day forecast · ground-up model · as of 2026-10-02

Likely R
11%
Colby Watson
Democrat
89%
Mark Harris
Republican
Expected margin and its 90% range
R+40R+20R+10EvenD+10D+20D+40R+11.4
What moves this district (points of margin; blue toward the Democrat, red toward the Republican)
2024 presidential lean−6.5
2024 House lean−2.8
experience gap−2.1
snap share income+0.7
snap share−0.5

The district, in brief

North Carolina's 8th is on a map first used in 2026. The text's description of the district is truncated by a formatting error; what survives lists Anson, Montgomery, Richmond, Scotland, Stanly and Union counties, most of Cabarrus County, portions of southern Mecklenburg County and most of Robeson County. The facts record a 2024 presidential two-party margin of -19.6 for the Democrat on the current lines.

The incumbent is Republican Mark Harris, elected with 59.6% in 2024. He is the Republican nominee; the text lists no primary result, only that Brianna Prince was disqualified. The Democratic nominee is Colby Watson, a federal contractor, who won the primary with 47.9% over Kevin Clark (37.2%) and Jesse Oppenheim (14.9%), who had withdrawn but remained on the ballot. The 2024 nominee, Justin Dues, withdrew to run for U.S. Senate. Green nominee Robert "Bo" Whitehead is also standing. As of June 30, 2026 Harris had raised $1,019,134 with $517,853 on hand; Watson $39,569 with $2,343 on hand; Whitehead $0.

Every rater listed calls the seat R: Decision Desk HQ (July 14, 2026), the Cook Political Report (February 6, 2025), Inside Elections (March 7, 2025) and Sabato's Crystal Ball (April 10, 2025). The text records no district polls.

A paragraph quoting a model forecast from the day this brief was written is omitted; the current forecast is at the top of this page.

The facts, each beside its sentence

Incumbent
Mark Harris (R)The incumbent is Republican Mark Harris, who was elected with 59.6% of the vote in 2024.
Open seat
noThe incumbent is Republican Mark Harris
Democratic nominee
Colby Watson====Nominee==== *Colby Watson, federal contractor
Republican nominee
Mark HarrisMark Harris, incumbent U.S. representative
Democrat's background
federal contractor====Nominee==== *Colby Watson, federal contractor
Republican's background
incumbent U.S. representativeMark Harris, incumbent U.S. representative
Last result
Harris elected with 59.6% in 2024who was elected with 59.6% of the vote in 2024
Lines
Map first used in 2026 (per facts); the text's description is truncated but lists Anson, Montgomery, Richmond, Scotland, Stanly and Union counties, most of Cabarrus County, portions of southern Mecklenburg County and most of Robeson CountyAnson, Montgomery, Richmond, Scotland, Stanly, and Union counties, as well as most of Cabarrus County, portions of southern Mecklenburg County, and most of Robeson County.
Primaries
Watson won the Democratic primary with 47.9% over Kevin Clark (37.2%) and Jesse Oppenheim (14.9%), who had withdrawn but remained on the ballot; Harris is the Republican nominee with no primary result listedcandidate: Colby Watson votes: 18,272 percentage: 47.9
Raters
Decision Desk HQ: R (July 14, 2026); Cook: R (February 6, 2025); Inside Elections: R (March 7, 2025); Sabato's Crystal Ball: R (April 10, 2025)Decision Desk HQ R July 14, 2026 The Cook Political Report R February 6, 2025
Money
As of June 30, 2026: Harris raised $1,019,134 with $517,853 on hand; Watson raised $39,569 with $2,343 on hand; Whitehead $0| Mark Harris (R) $1,019,134 $608,814 $517,853
Also
Justin Dues, the 2024 Democratic nominee, withdrew to run for U.S. Senate; Jesse Oppenheim, who had raised $314,019, withdrew but remained on the ballotJustin Dues, tech consultant and nominee for this district in 2024 (ran for US Senate)
Green nominee Robert "Bo" Whitehead is on the ballotRobert "Bo" Whitehead, blue collar worker
Brianna Prince was disqualified from the Republican primary; Justin Bunting from the Democratic primary====Disqualified==== *Justin Bunting, author ====Endorsements====

Not in the source: The text's district description is truncated by a formatting error.; No Republican primary results appear in the text.; No district polls in the text; the model's basis also says no district polls.; No presidential results in the text; only the facts' 2024 two-party baseline is available.; No endorsements are listed.

Read from the district's section of Wikipedia's state page (CC BY-SA), archived as 828929623813; written by claude-fable-5-1 (batch reader) on 2026-09-30 and checked mechanically: every quote occurs verbatim in the archived text, every number in the brief occurs in the inputs. No probability here is the reader's.

Who holds the seat now

Mark Harris (Republican), in this chamber since 2025, 1 term. Committees: House Committee on Agriculture; House Committee on the Judiciary; House Committee on Education and Workforce.

From the congress-legislators dataset (CC0), archived as ae8cb9477c48. For a Senate race this lists both of the state's senators; the one whose term ends in the election year holds the seat on the ballot. For a House district redrawn for 2026 it is the member elected under the old lines with this number, who may be running elsewhere; the dossier above names who is running here.

How it has voted for president

Two-party margin201620202024
PresidentR+15.1R+12.5R+15.0

A shift of 0.1 points toward the Democrats from 2016 to 2024. county returns placed on the current lines by 2020 block population; MEDSL county file (2016), an MIT-licensed county file (2020, checked against certified state results) and MEDSL precinct returns (2024). For a district split across counties this is an estimate, and where the state published the exact 2024 figure for these lines, that exact figure is the one the model uses.

Who are the voters?

Group (adults 25+)Share of adultsTurnout 2020 / midtermShare of a midterm electorateEst. Democratic share, 2020
White, no degree41%57% / 41%38%9%
White, degree25%78% / 64%36%54%
Black17%62% / 40%15%88%
Hispanic6%24% / 17%2%49%
Asian4%49% / 16%1%60%
Other / multiracial8%59% / 42%7%34%

Of about 501,031 adults 25 and over. In 2020 the district voted 41.1% Democratic (two-party) for president. With the same preferences and a 2022-style midterm turnout, it would vote 40.6% Democratic: the midterm electorate alone moves the margin 0.9 points toward Republicans. Group shares are estimated from how results vary across the state's census tracts (ecological inference, anchored to Pew's 2020 validated-voter figures) and calibrated to this district's actual 2020 vote; turnout is the Census survey's state rate by race and national rate by education, whose state samples carry margins of several points.

Not answered here: how each group will vote in 2026. These are 2020 preferences; this profile is description, not yet an input to the forecast.

The money

CandidateRaisedCash on handPAC shareSelf-fundedOutside $ forOutside $ against
Harris, Mark E (REP)
incumbent
$1,019,134$517,85320%0%$13,793$0
Harris, Mark E (REP)
challenger
$1,019,134$517,85320%0%$0$0
Oppenheim, Jesse (DEM)
challenger · not on our roster
$314,099$49,3130%8%$0$0
Brown, Don (REP)
open seat · not on our roster
$224,689$00%5%$0$0
Watson, Colby (DEM)
challenger
$39,569$2,3432%64%$0$0
D'Annunzio, Timothy Bruce (REP)
challenger · not on our roster
$1$1,4040%0%$0$0

FEC bulk candidate summaries through June 30, 2026; $13,793 of independent expenditures for or against these candidates this cycle (FEC Schedule E, types 24E and 24A), which is the parties' and outside groups' own revealed view of whether this seat is in play.

The district in numbers

MeasureDistrictNationDifference
Bachelor's degree or higher, 25+34.0%34.9%-0.9 pts
White, non-Hispanic60.6%58.2%+2.4 pts
Black, non-Hispanic16.7%12.0%+4.7 pts
Hispanic or Latino9.5%19.0%-9.5 pts
Asian, non-Hispanic3.8%5.8%-2.0 pts
Foreign-born8.9%13.9%-5.0 pts
Median age39.739.20.5
Median household income$90,317$84,362$+5,955
Median home value$310,843$379,737$-68,894
Owner-occupied homes74.6%65.1%+9.5 pts
Unemployment, July 2026 (BLS county data)3.8%4.4%-0.6 pts
Change in unemployment, past 12 months-0.4 pts——
Change since the last election (24 months)-0.5 pts——
Unemployment (ACS)4.9%5.2%-0.3 pts
Federal government workers1.3%2.6%-1.3 pts
Work from home14.8%13.5%+1.3 pts
Households on SNAP14.0%11.8%+2.3 pts
Households with Social Security income32.6%31.2%+1.4 pts
Households with public assistance income1.6%2.7%-1.1 pts
Moved in from another state, past year2.2%2.3%-0.1 pts
Gini index0.400.44-0.04
Per-capita personal income (BEA), 2024$66,547$73,248$-6,701
Per-capita income growth since 2019, nominal, 202437.0%32.0%+5.1 pts
Government and other transfers, share of income, 202419.5%19.6%-0.1 pts
Social Security, share of income, 20225.7%5.8%-0.1 pts
Medicare, share of income, 20224.3%4.5%-0.1 pts
Medicaid, share of income, 20223.2%4.0%-0.7 pts
SNAP, share of income, 20220.9%0.6%+0.3 pts
Earned Income Tax Credit, share of income, 20220.4%0.4%+0.1 pts
Veterans' benefits, share of income, 20221.0%0.9%+0.1 pts
Federal civilian jobs, share of all jobs, 20220.4%1.3%-0.9 pts
Military jobs, share of all jobs, 20220.4%0.9%-0.5 pts

ACS 5-year 2023, assembled from census tracts by the 2020 population of their blocks inside the current lines, because the Bureau has not tabulated these lines; medians are population-weighted means of tract medians. Unemployment is the BLS county series placed on the district by block population, not seasonally adjusted, so changes are same-month comparisons. Income, transfers and jobs are BEA county accounts placed the same way, compared with the average district. Every other figure is a named column of a named table in the Bureau's summary file, archived before it was read. This is what a reader knows about a district before looking at a poll; the model does not yet use it, and whether it should is a registered question.

Who is favoured, and by how much?

89%
Mark Harris
run 6f211e6f · house_district_prior/0.2.0 · as of 2026-10-02
-11.3
expected margin, D-R
run 6f211e6f · house_district_prior/0.2.0 · as of 2026-10-02

The 90% interval runs from -26.2 to +3.6 points, D-R. It is wide because this district has never been polled.

What is this built on?

A model trained on every contested House race 2012-2024 predicts this district's lean from its own record: presidential and House results on the current lines, incumbency, both candidates' prior offices, outside and party money before 1 October, demographics and public-assistance shares from the Census release before the election, local unemployment and income, and religious tradition. The national margin comes from presidential approval, the economy, the midterm penalty and the generic ballot corrected for its measured lean. Draws share national and state errors, so the seat total and this district come from the same simulation.

Not answered here: district polls, which are not yet folded in.

Why does the model say this?

Each figure is how far this district's predicted lean moves when that one feature is set to the typical value across 2026 districts, everything else held: 2024 presidential lean (R+18.1): 6.5 pts toward the Republican; 2024 House lean: 2.8 pts toward the Republican; experience gap (-4 levels, D minus R): 2.1 pts toward the Republican; snap share income (0.8%): 0.7 pts toward the Democrat; snap share (14.2%): 0.5 pts toward the Republican.

How sure is it, and of what?

Total sd 9.14 points, made of the seat's own volatility 91%, correlated polling error 9%. The decomposition is stored with the forecast rather than reconstructed, so a probability whose dominant input is a placeholder is visibly that.

Not answered here: a nowcast. 'If ballots were cast today' needs something that observes today, and for a House district nothing does. Publishing the election-day figure under both labels would make one forecast look like two.

How was this number made?

Run 6f211e6f-2bdc-4dda-8f72-81fc628dab0b, house_district_prior/0.2.0, as of 2026-10-02. Promoted by a pre-registered gate: on 2016-2022 its Brier score was 0.036 against 0.049 for the previous method, and on a single 2024 run 0.023 against 0.032 (experiments/district_gate_result.md, with an independent review).