House District 131
Lehigh Valley · currently held by R (Milou Mackenzie)
Forecast
57%
chance Meriam H Sabih (D) wins
- Democrat
- Meriam H Sabih
- Republican
- V Milou Mackenzie
- Rating
- Tilt D
- Expected margin
- D+1.1 (90% range R+10.2 to D+12.6)
- Chance of flipping
- 56.5%
- Tipping-point chance
- 2.4% (chance this seat decides control)
How the forecast was built
| Statewide generic legislative margin (environment) | D+6.6 |
| + District partisan lean | -7.4 |
| = Fundamentals before candidates | R+0.7 |
| + Incumbency advantage | -2.8 |
| + Incumbent's past over-performance (shrunk) | +2.0 |
| + Campaign finance (log receipts ratio) | +0.7 |
| = Fundamentals margin | R+0.9 |
| District polls (2, average D+4.0, weight 38%) | +1.9 |
| External ratings prior (weight 25%) | +0.2 |
| Final expected margin | D+1.1 |
District-level error SD 5.6 pts; total with statewide and regional error ≈ 7.0 pts.
Inputs
Partisan lean (current lines)
| Race | District | Statewide | Lean | Weight |
|---|---|---|---|---|
| 2024 President | R+10.3 | R+1.8 | -8.5 | 0.45 |
| 2022 Governor | D+5.7 | D+15.0 | -9.4 | 0.2 |
| 2022 U.S. Senate | R+4.3 | D+5.0 | -9.4 | 0.2 |
| 2020 President | R+8.6 | D+1.1 | -9.7 | 0.15 |
Last legislative result (2024): R+14.5 vs a statewide legislative environment of R+8.2 → lean -3.5, blended at 30%.
Candidates & money
- Incumbent
- Milou Mackenzie (R) — running
- Receipts (cycle)
- D $50,971 · R $19,435
Past results in this district
| Year | Democrat | Republican | Margin |
|---|---|---|---|
| 2024 | Meriam H Sabih | V. Milou Mackenzie | R+14.5 |
| 2022 | Kevin Branco | V. Milou Mackenzie | R+9.8 |
| 2020 | Kevin Branco | V Milou Mackenzie | R+8.5 |
District polls
| Pollster | Sponsor | End | n | Margin | Adjusted | Weight |
|---|---|---|---|---|---|---|
| State Navigate | none (State Navigate polling fund) | 2026-10-14 | 464 | D+5.0 | D+5.0 | 80% |
| State Navigate | none (State Navigate polling fund) | 2026-09-20 | 389 | even | even | 20% |
External ratings
| Source | Rating | Implied P(Dem) | Weight | As of |
|---|---|---|---|---|
| state_navigate | Lean R (lean r) | 58% | 0.25 | 2026-10-15 |
Ratings are blended as a prior, not copied: they moved this seat's expected margin by +0.2 points.