State Incumbent Party First
elected
Result Candidates
Alabama Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 60.9% (9 EVs)
Winfield Scott (Whig) 34.1%
George Troup (Southern Rights) 5.0%
Arkansas Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 62.2% (4 EVs)
Winfield Scott (Whig) 37.8%
California None (New state) New state.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 53.0% (4 EVs)
Winfield Scott (Whig) 46.8%
John P. Hale (Free Soil) 0.1%
Write-Ins 0.1%
Connecticut Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 49.8% (6 EVs)
Winfield Scott (Whig) 45.5%
John P. Hale (Free Soil) 4.7%
Unknown 0.02%
Delaware Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 49.8% (3 EVs)
Winfield Scott (Whig) 49.7%
John P. Hale (Free Soil) 0.5%
Florida Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 60.0% (3 EVs)
Winfield Scott (Whig) 40.0%
Georgia Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 64.7% (10 EVs)
Winfield Scott (Whig) 26.6%
Daniel Webster[a] (Know Nothing) 8.5%
George Troup (Southern Rights) 0.2%
Illinois Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 51.9% (11 EVs)
Winfield Scott (Whig) 41.8%
John P. Hale (Free Soil) 6.4%
Indiana Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 52.0% (13 EVs)
Winfield Scott (Whig) 44.2%
John P. Hale (Free Soil) 3.8%
Iowa Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 50.2% (4 EVs)
Winfield Scott (Whig) 44.8%
John P. Hale (Free Soil) 4.5%
Write-Ins 0.4%
Kentucky Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Whig hold.
Green tickY Winfield Scott (Whig) 51.4% (12 EVs)
Franklin Pierce (Democratic) 48.3%
John P. Hale (Free Soil) 0.2%
Louisiana Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 51.9% (6 EVs)
Winfield Scott (Whig) 48.1%
Maine Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 50.6% (8 EVs)
Winfield Scott (Whig) 39.6%
John P. Hale (Free Soil) 9.8%
Maryland Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 53.3% (8 EVs)
Winfield Scott (Whig) 46.7%
John P. Hale (Free Soil) 0.03%
Massachusetts Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Whig hold.
Green tickY Winfield Scott (Whig) 41.4% (13 EVs)
Franklin Pierce (Democratic) 35.1%
John P. Hale (Free Soil) 22.2%
Daniel Webster[a] (Whig) 1.3%
Jacob Broom (Know Nothing) 0.1%
Michigan Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 50.4% (6 EVs)
Winfield Scott (Whig) 40.8%
John P. Hale (Free Soil) 8.7%
Mississippi Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected.
Democratic hold.
Green tickY Franklin Pierce (Democratic) 60.5% (7 EVs)
Winfield Scott (Whig) 39.5%
Missouri Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 56.4% (9 EVs)
Winfield Scott (Whig) 43.6%
New Hampshire Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 56.4% (5 EVs)
Winfield Scott (Whig) 30.6%
John P. Hale (Free Soil) 13.0%
New Jersey Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 53.2% (7 EVs)
Winfield Scott (Whig) 46.3%
John P. Hale (Free Soil) 0.4%
New York Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 50.2% (35 EVs)
Winfield Scott (Whig) 45.0%
John P. Hale (Free Soil) 4.9%%
Daniel Webster[a] (Whig) 0.1%
William Goodell (Liberty) 0.01%
North Carolina Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 50.4% (10 EVs)
Winfield Scott (Whig) 49.5%
Write-In 0.1%
Ohio Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 47.8% (23 EVs)
Winfield Scott (Whig) 43.2%
John P. Hale (Free Soil) 9.0%
Pennsylvania Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 51.2% (27 EVs)
Winfield Scott (Whig) 46.2%
John P. Hale (Free Soil) 2.2%
Jacob Broom (Know Nothing) 0.4%
Rhode Island Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Democratic gain.
Green tickY Franklin Pierce (Democratic) 51.4% (4 EVs)
Winfield Scott (Whig) 44.8%
John P. Hale (Free Soil) 3.8%
South Carolina Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) (8 EVs)
Winfield Scott (Whig)
Tennessee Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Whig hold.
Green tickY Winfield Scott (Whig) 50.7% (12 EVs)
Franklin Pierce (Democratic) 49.3%
Texas Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected.
Democratic hold.
Green tickY Franklin Pierce (Democratic) 73.1% (4 EVs)
Winfield Scott (Whig) 26.9%
Vermont Zachary Taylor Whig 1848 Incumbent died.
New member elected.
Whig hold.
Green tickY Winfield Scott (Whig) 50.5% (5 EVs)
Franklin Pierce (Democratic) 29.7%
John P. Hale (Free Soil) 19.6%
Write-In 0.1%
Virginia Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 55.7% (15 EVs)
Winfield Scott (Whig) 44.3%
Wisconsin Lewis Cass Democratic 1848 Incumbent lost renomination.
New member elected
Democratic hold.
Green tickY Franklin Pierce (Democratic) 52.0% (5 EVs)
Winfield Scott (Whig) 34.4%
John P. Hale (Free Soil) 13.7%

Notes

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  1. ^ a b c Died before election, but remained on ballot.