99chambers
Thomas R. Carper
Photo: Government Publishing Office, Public domain
DemocratNot in office · last served 2025Last on a ballot: Nov 2018

Thomas R. Carper

Last held office: U.S. Senate, Delaware (2001–2025). Ran in 11 elections between 1982 and 2018, winning 11.

Last office: U.S. Senate, DelawareBorn 1947

WikipediaCongress.govFEC filings

Last margin
+22.1
Won 2018
Elections
11
1982–2018

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Nov 7, 2026, 3:00 PM ET

Career

Offices held, and every time Carper was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Every race Carper has run

Baseline: how the seat voted for president in the same or nearest year. Running ahead of it means Carper won voters the party’s presidential nominee did not; primaries have no baseline.

YearOfficeStageResultOpponentsShareMarginRaisedBaselineAgainst baseline
2018U.S. Senate, DelawareGeneralWonRobert B. Arlett (R), Demitri G. Theodoropoulos (G), Nadine M. Frost (L)60%D+22.1$3.2MD+12.0+10.1
2012U.S. Senate, DelawareGeneralWonKevin Wade (R), Alexander Pires (I), Andrew Richard Groff (G)66.4%D+37.5$3.5MD+18.9+18.6
2006U.S. Senate, DelawareGeneralWonJan Ting (R), William E. Morris (L)70.2%D+41.5$3.2MD+7.7+33.8
2000U.S. Senate, DelawareGeneralWonWilliam Roth (R), J. Burke Morrison (L), Mark E. Dankof (CST)55.5%D+11.8$2.6MD+13.5−1.7
1996Governor of DelawareGeneralWonJanet C. Rzewnicki (R)69.5%D+39.0—D+17.2+21.8
1992Governor of DelawareGeneralWonB. Gary Scott (R)66.4%D+32.8—D+10.4+22.4
1990U.S. House, DE-ALGeneralWonRalph O. Williams (R), Richard A. Cohen (L)65.5%D+32.8$548.7KR+12.5+45.3
1988U.S. House, DE-ALGeneralWonJames P. Krapf (R)67.5%D+35.0$365.4KR+12.5+47.5
1986U.S. House, DE-ALGeneralWonThomas S. Neuberger (R), Patrick F. Harrison (I)66.2%D+32.7$326.8KR+19.9+52.6
1984U.S. House, DE-ALGeneralWonElise Du Pont (R), V. Luther Etzel (L)58.5%D+17.0$365.9KR+19.9+36.9
1982U.S. House, DE-ALGeneralWonThomas B. Evans Jr. (R), Mary D. Gies (I), Richard A. Cohen (L)52.4%D+6.1$148.3KR+2.5+8.6

Source: 99chambers results archive

Campaign money, 2017–18

Raised
$3.2M
Spent
$3.1M
Cash
$360.6K

Source: FEC filings through Dec 31, 2018Updated Oct 8, 2026, 10:37 AM ET

Seats Carper has held

Source: 99chambers results archive

Who Carper has run against

Source: 99chambers results archive

In the polls

Included in 12 polls; Carper’s best result was 63% (U.S. Senate in Delaware, 2006).

Carper’s polls in the database →

Source: Polls: The New York Times and Wikipedia poll lists

How we know Carper

One person, matched across every source we use.

Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Nov 7, 2026, 3:00 PM ET