Allegheny stayed blue but tightened in 2024.

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Allegheny County, PA

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Allegheny County voted D+20.3 in 2024, essentially unchanged from D+20.4 in 2020 and matched by a lean score of D+19.8 that marks the county as durably Democratic across cycles. Turnout landed at 37.3%, with the Pittsburgh-anchored margin standing apart from the state and PA-12 comparison shapes drawn around it on the map.

The big picture

Headline numbers at a glance

Allegheny voted D+20.3 in 2024, holding nearly flat from D+20.4 in 2020. The lean score sits at D+19.8, marking the county as durably Democratic across cycles. Turnout came in at 37.3%.

D+20.3

Lean Score: D+19.8
2020 margin: D+20.4
2024 turnout: 37.3%

On the map

Where the answer lives

Allegheny in Pennsylvania, drawn against the state outline.

Primary shape: Allegheny
Shown alongside: 3 regions · PA

Center point: 40.46°N, 79.92°W
Detail level: 8
Size: 0.67° × 0.48°

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Akashic Atlas, "Allegheny stayed blue but tightened in 2024", answer ID -wX195CI9WrD, generated 2026-04-27, retrieved 2026-04-29. https://akashicedge.com/atlas/a/-wX195CI9WrD

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