
Benjamin L. Cardin
Last held office: U.S. Senate, Maryland (2007–2025). Ran in 20 elections between 1970 and 2018, winning 20.
Last office: U.S. Senate, MarylandBorn 1943
- Last margin
- +34.5
- Won 2018
- Elections
- 20
- 1970–2018
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Nov 7, 2026, 3:00 PM ET
Career
Offices held, and every time Cardin 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 Cardin has run
Baseline: how the seat voted for president in the same or nearest year. Running ahead of it means Cardin won voters the party’s presidential nominee did not; primaries have no baseline.
Source: 99chambers results archive
Campaign money, 2017–18
- Raised
- $4.1M
- Spent
- $3.5M
- Cash
- $1.3M
Source: FEC filings through Dec 31, 2018Updated Oct 8, 2026, 10:37 AM ET
Seats Cardin has held
- U.S. Senate, Maryland · 2007–2025
- U.S. House, MD-3 · 1987–2007
- Maryland House of Delegates, District 42 · 1974–1986
- Maryland House of Delegates, District BALTIMORECITY 5 · 1970–1974
Source: 99chambers results archive
Who Cardin has run against
- Tony Campbell (R) · 2018 election, won
- Daniel John Bongino (R) · 2012 election, won
- Michael S. Steele (R) · 2006 election, won
- Robert P. Duckworth (R) · 2004 election, won
- Scott Conwell (R) · 2002 election, won
- Colin Harby (R) · 2000 election, won
- Patrick L. McDonough (R) · 1996 election, won
- Robert Ryan Tousey (R) · 1994 election, won
Source: 99chambers results archive
In the polls
Included in 33 polls; Cardin’s best result was 57% (U.S. Senate in Maryland, 2012).
Cardin’s polls in the database →How we know Cardin
One person, matched across every source we use.
- Bioguide C000141
- FEC S6MD03177
- Wikidata Q723295
- Ballotpedia Ben Cardin
- Vote Smart 26888
- GovTrack 400064
- OpenSecrets N00001955
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Nov 7, 2026, 3:00 PM ET