Pennsylvania 1st Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +8.2% |
| 2012 | +0.8% |
| 2016 | +0.7% |
| 2020 | +4.6% |
| 2024 | +0.3% |
Federal officeholders only. State and local officeholders are planned for the next data pass.
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
| Year | District | Won | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | 1 | R | 43.6%202,042 | 56.4%261,390 | 463,432 |
| 2022 | 1 | R | 45.1%165,809 | 54.9%201,571 | 367,380 |
| 2020 | 1 | R | 43.4%191,875 | 56.6%249,804 | 441,679 |
| 2018 | 1 | R | 48.7%160,745 | 51.3%169,053 | 329,798 |
| 2016 | 1 | D | 82.2%245,791 | 17.8%53,219 | 299,010 |
| 2014 | 1 | D | 82.8%131,248 | 17.2%27,193 | 158,441 |
| 2012 | 1 | D | 84.9%235,394 | 15.1%41,708 | 277,102 |
| 2010 | 1 | D | 100.0%149,944 | 0.0%0 | 149,944 |
| 2008 | 1 | D | 90.8%242,799 | 9.2%24,714 | 267,513 |
| 2006 | 1 | D | 100.0%137,987 | 0.0%0 | 137,999 |
| 2004 | 1 | D | 86.3%214,462 | 13.4%33,266 | 248,585 |
| 2002 | 1 | D | 86.4%121,076 | 12.5%17,444 | 140,090 |
| 2000 | 1 | D | 88.3%149,621 | 11.7%19,920 | 169,541 |
| 1998 | 1 | D | 81.2%77,788 | 16.6%15,898 | 95,848 |
| 1996 | 1 | D | 87.5%145,210 | 12.5%20,734 | 165,945 |
| 1994 | 1 | D | 81.5%99,669 | 18.5%22,595 | 122,264 |
| 1992 | 1 | D | 80.9%150,172 | 19.1%35,419 | 185,591 |
| 1990 | 1 | D | 79.4%73,423 | 20.6%19,018 | 92,441 |
| 1988 | 1 | D | 76.3%128,076 | 23.7%39,749 | 167,825 |
| 1986 | 1 | D | 74.7%88,224 | 25.3%29,811 | 118,035 |
| 1984 | 1 | D | 74.9%148,123 | 25.1%49,559 | 197,682 |
| 1982 | 1 | D | 72.3%103,626 | 26.6%38,155 | 143,416 |
| 1980 | 1 | D | 71.9%111,693 | 24.4%37,893 | 155,451 |
| 1978 | 1 | D | 71.9%104,412 | 26.1%37,913 | 145,162 |
| 1976 | 1 | D | 73.5%117,087 | 25.2%40,191 | 159,205 |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | R | 48.6%3,384,180 | 48.8%3,399,295 | 6,963,137 |
| 2022 | D | 51.2%2,751,012 | 46.3%2,487,260 | 5,368,021 |
| 2018 | D | 55.6%2,777,680 | 42.7%2,134,848 | 4,994,643 |
| 2016 | R | 47.3%2,865,012 | 48.8%2,951,702 | 6,051,856 |
| 2012 | D | 53.7%3,021,364 | 44.6%2,509,132 | 5,627,422 |
| 2010 | R | 49.0%1,948,716 | 51.0%2,028,945 | 3,977,661 |
| 2006 | D | 58.7%2,392,984 | 41.3%1,684,778 | 4,077,762 |
| 2004 | R | 42.0%2,334,126 | 52.6%2,925,080 | 5,558,525 |
| 2000 | R | 45.5%2,154,908 | 52.4%2,481,962 | 4,735,116 |
| 1998 | R | 34.8%1,028,839 | 61.3%1,814,180 | 2,957,499 |
| 1994 | R | 46.9%1,648,481 | 49.4%1,735,691 | 3,513,112 |
| 1992 | R | 46.3%2,224,966 | 49.1%2,358,125 | 4,802,410 |
| 1988 | R | 32.4%1,416,764 | 66.5%2,901,715 | 4,366,598 |
| 1986 | R | 42.9%1,448,219 | 56.4%1,906,537 | 3,378,226 |
| 1982 | R | 39.2%1,412,965 | 59.3%2,136,418 | 3,604,108 |
| 1980 | R | 48.0%2,122,391 | 50.5%2,230,404 | 4,418,042 |
| 1976 | R | 46.8%2,126,977 | 52.4%2,381,891 | 4,546,353 |
Pennsylvania's 1st, anchored in Bucks County north of Philadelphia, has shifted from reliably Republican to a genuine battleground, with the 2024 presidential race settling at just 1.4 points Democratic — a margin that keeps both parties investing heavily here.
Across the recorded series it reached a Democratic high of 8.2 points in 2008. Between 2020 and 2024 the district moved 4.3 points toward the Republican candidate; the 2024 margin was 0.3 points.
A population of 764,318, a 81% non-Hispanic-white share, and a median household income of $113,911 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 7 and Congressional District 4.
The congressional districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Pennsylvania 1st Congressional District. Akashic. https://akashic.app/cd/4201/. Accessed May 20, 2026. License: CC BY 4.0.