Pennsylvania 9th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | −13.4% |
| 2012 | −21.6% |
| 2016 | −39.6% |
| 2020 | −36.5% |
| 2024 | −37.9% |
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 | 9 | R | 29.5%115,523 | 70.5%276,212 | 391,735 |
| 2022 | 9 | R | 30.7%92,622 | 69.3%209,185 | 301,807 |
| 2020 | 9 | R | 33.7%118,266 | 66.3%232,988 | 351,254 |
| 2018 | 9 | R | 40.3%100,204 | 59.7%148,723 | 248,927 |
| 2016 | 9 | R | 36.7%107,985 | 63.3%186,580 | 294,565 |
| 2014 | 9 | R | 36.5%63,223 | 63.5%110,094 | 173,317 |
| 2012 | 9 | R | 38.3%105,128 | 61.7%169,177 | 274,305 |
| 2010 | 9 | R | 26.9%52,322 | 73.1%141,904 | 194,226 |
| 2008 | 9 | R | 36.1%98,735 | 63.9%174,951 | 273,686 |
| 2006 | 9 | R | 39.6%79,610 | 60.3%121,069 | 200,820 |
| 2004 | 9 | R | 30.5%80,787 | 69.5%184,320 | 265,107 |
| 2002 | 9 | R | 28.9%50,558 | 71.0%124,184 | 174,849 |
| 2000 | 9 | R | 0.0%0 | 100.0%184,401 | 184,401 |
| 1998 | 9 | R | 0.0%0 | 99.5%125,409 | 126,027 |
| 1996 | 9 | R | 26.3%50,650 | 73.7%142,105 | 192,822 |
| 1994 | 9 | R | 0.0%0 | 99.7%146,688 | 147,203 |
| 1992 | 9 | R | 0.0%0 | 100.0%182,406 | 182,406 |
| 1990 | 9 | R | 0.0%0 | 100.0%106,632 | 106,632 |
| 1988 | 9 | R | 0.0%0 | 100.0%158,702 | 158,702 |
| 1986 | 9 | R | 0.0%0 | 100.0%120,890 | 120,890 |
| 1984 | 9 | R | 33.5%59,549 | 66.5%118,437 | 177,986 |
| 1982 | 9 | R | 34.9%49,583 | 65.1%92,322 | 141,905 |
| 1980 | 9 | R | 0.0%0 | 100.0%157,241 | 157,241 |
| 1978 | 9 | R | 25.1%33,882 | 74.9%101,151 | 135,033 |
| 1976 | 9 | R | 0.0%0 | 100.0%154,359 | 154,359 |
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 |
Spanning rural south-central Pennsylvania from the Maryland border toward the Susquehanna Valley, PA-9 delivered a 32-point Republican presidential margin in 2024, making it among the state's least competitive districts.
Across the recorded series it reached a Republican high of 39.6 points in 2016. Between 2020 and 2024 the district moved 1.4 points toward the Republican candidate; the 2024 margin was 37.9 points.
A population of 764,897, a 89% non-Hispanic-white share, and a median household income of $69,483 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 14 and Congressional District 15.
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 9th Congressional District. Akashic. https://akashic.app/cd/4209/. Accessed May 20, 2026. License: CC BY 4.0.