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Races · house · 2026 · Pennsylvania
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house · open seat

Janelle Stelson vs Scott Perry

Lean DD +3.0 forecast · 3 months 27 days to election· 3 polls · 6 marketsLast poll 75d agoMarkets 11h agoRating today
Live model · win probabilityupdated 11h ago · poliagg-v34
60% Stelson (D)
40% Perry (R)
R+15R+5TIEDD+5D+15
Predicted final margin D +3.0 · 80% CI R+13.1 → D+19.1 · 3 months 27 days to election
Momentum
insufficient data
Tipping-point P
3.9%
Decisive for chamber control
Market · D-side
D 79¢
Cross-platform consensus
News articles · 30d
no recent coverage
Caution · early warning
Editorial raters moved while polling has gone quiet

The last rating change here was 18d ago, but only 0 polls have landed in the last 60 days. When raters move and pollsters don't, the rating shift may be running ahead of the data. Watch for a late-cycle correction in either direction.

Where this race stands
Verified

Likely D · model 60% D · market gap 14pp

Polling average rates this race Likely D (D+6.0, sourced from polls).

The poliagg-v34 ensemble forecasts D+3.0 with an 80% CI ranging from R+13.1 (10th pctile) to D+19.1 (90th pctile), giving D a 60% chance of winning.

Tipping-point probability: 3.9% of simulations see this race as decisive for chamber control.

Uncertainty score: 100/100 (high). Key drivers: only 0-1 recent polls; wide forecast CI (32.2pp). Treat any single point estimate with extra caution.

Model and market disagree: Model says D wins at 60%, market says 73% — 13pp gap.

CITATIONS · likely-d · low-tipping · uncertainty-high · market-disagreement-medium
How confident are we?0 = certain · 100 = max uncertain
Combined
100
High uncertainty
Main driver: only 0-1 recent polls.
Forecast CI width100
32.2pp 80% interval
Inter-model disagreement67
13.3pp across models
Polling sparsity100
0 polls in 60d · target ≥ 8
Forecast · poliagg-v34
Predicted final margin
D +3.0
80% CI: R +13.1D +19.1 · win prob 60%
R+30R+15TIEDD+15D+30
Quality · inputs
Data quality · medium
Polls used3
Days to election118
Residual σ12.56pt
Generated7/7/2026
Compare with other models3 models
qgbt-v1GBT (qgbt)
R +9.7
80% CI R +13.6 → R +8.3
CV MAE 8.51
bayes-v1Bayes / Kalman
D +3.7
80% CI D +0.7 → D +6.7
CV MAE 2.34
consensusMarket-implied
D +7.4
no interval
market-implied

Polling average

40444852STELSON 51.0PERRY 45.0JUL '25NOV '25APR '26
Weighted, plus each pollster's measured bias subtracted before averaging.

Prediction markets

Consensus · D 79¢3 platformsupdated 11h ago
DisagreementMarkets are 28 points more bullish on D than polling. Markets 79% · polls 51%.
Cross-platform price · history
50¢60¢70¢80¢90¢100¢370 DAYS · D YES PRICENOWJul 2Jul 7
Per-platform · current
PlatformD YESR YES7d ΔVolvs cons
Predictit
Which party will win the 2026 US House election in Pennsylva
94¢20¢+0¢+15
Polymarket
Will the Republican Party win the PA-10 House seat?
71¢27¢+0¢-9
Kalshi
PA-10 House winner?
73¢27¢-1¢$0K-6
Predictit sits 15¢ above consensus.
External cross-checkExternal
Not part of our model or polling average
VoteHubaggregator ↗
1 polls · through Apr 23, 2026 · latest Normington Petts & Associates
Janelle Stetson
VoteHub51.0%
no matching candidate in our average
Scott Perry
VoteHub45.0%
PoliAgg avg45.0%
Δ 0.0 pt above our average

VoteHub's independent average across 1 polls (through Apr 23, 2026): Janelle Stetson 51.0%, Scott Perry 45.0%.

Independent comparison only — not part of our forecast or polling average. VoteHub aggregates its own poll set; the two candidates shown are its top by average and may not match our field.

All polls · 3 results

strongpositiveinfocautionflag
DatePollster · trust signalsn · popLeanBias · trackvs ratersD · R
Apr 22, 26Normington Petts+1For · Internal D-aligned400 · RVD-LEAN51 · 45
Nov 18, 25Public Policy Polling+2For · Internal D-aligned549 · RVNEUTRALD +0.9104 tracked+2.4noisy48 · 44
Jul 10, 25Public Policy Polling+1For · Internal D-aligned559 · unknownNEUTRALD +0.9104 tracked+2.4noisy46 · 43

Endorsements · 27 total

Source · Wikipedia · 0 candidates with no endorsements yet
23Stelson · 85%
Perry · 15%4
DJanelle Stelson23 endorsers
Most notable · Austin Davis · lieutenant governor of Pennsylvania (2023–present)
Elected officials13
Federal 6State 6Local 1
Organizations10
RScott Perry4 endorsers
Most notable · Donald Trump · president of the United States (2017–2021, 2025–present)
Elected officials2
Federal 2State 0Local 0
Organizations2

Money raised · own committees

FEC Schedule E (independent expenditures) + candidate-committee totals · last filing 2026-07-02
Scott PerryH2PA04135 ↗
Receipts
$4.4M
Disburse
$2.2M
Cash on hand
$2.3M
Debts
$157.9K
No industry data.
No contributor data.
Janelle StelsonH4PA10104 ↗
Receipts
$4.7M
Disburse
$1.4M
Cash on hand
$3.3M
Debts
$0
No industry data.
No contributor data.

Outside spending · independent expenditures

FEC Schedule E (independent expenditures) + candidate-committee totals · 24/48-hr IE reports
IE total
$213.6K
D side
$103.1K · 48%
R side
$110.5K · 52%
Top spender
HOUSE FREEDOM ACTION
For / against split
For Stelson $38.8K
Against Perry $64.3K
Against Stelson $15.5K
For Perry $95.0K
SpenderSideAmountShareTarget
HOUSE FREEDOM ACTIONR$45.0K21%for Scott Perry
LGBTQ CONNECTION PACD$33.4K16%against Scott Perry
FREEDOM CAUCUS FUNDR$28.3K13%for Scott Perry
Solidarity Victory PACD$26.9K13%for Janelle Stelson
WelcomePACD$21.3K10%against Scott Perry
Club for Growth PACR$17.3K8%for Scott Perry
KNOCK FOR DEMOCRACY, INC.D$11.4K5%for Janelle Stelson
CASA IN ACTION PACR$3.0K1%against Janelle Stelson
DMFI PACD$381.820%for Janelle Stelson

Editorial ratings · 4 raters

Cook · Sabato · Inside Elections · 538 · DDHQ et al.
Likely D1
Tossup3
Cook Political Report
Tossup
Jun 17
Inside Elections
Tossup
Jun 24
Sabato's Crystal Ball
Tossup
Jun 8
Split Ticket
Likely D
Jun 24

Demographic crosstabs

age · education · race · gender
No demographic crosstabs published for this race yet. Most pollsters release only topline numbers; subgroup breakdowns (age, education, race, gender) appear here when a pollster publishes them.
Rating timeline
Jun 18, 2026Lean Dmodel
Jun 14, 2026Tossupmodel
May 5, 2026Likely Rmodel
May 3, 2026Tossupmodel
Verification trail
Polls verified3 / 3deterministic
Polls flaggednone
Markets ingested3 platformsupdated 11h ago
FEC filingssyncedcommittee + IE · 2026-07-02
Endorsements29 totalWikipedia scrape
News coverage< 5 articlesGoogle News
Method · bounds + percentage totals + date-order checks