Chuck Grassley
U.S. Senator from Iowa since 1981. Next on the ballot in 2028.
U.S. Senator from IowaBorn 1933
- In office
- 45 yrs
- Since 1981
- Bills became law
- 0
- 97 sponsored, 119th Congress
- Votes missed
- 2.6%
- Chamber median 2.1%
- With party
- 99%
- On votes splitting the parties
- Last margin
- +12.2
- Won 2022
- Next election
- 2028
- Nov 7, 2028
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Nov 7, 2026, 3:00 PM ET
Committees
119th Congress.
- Senate Committee on Agriculture, Nutrition, and ForestryCommodities, Derivatives, Risk Management, and TradeFood and Nutrition, Specialty Crops, Organics, and ResearchRural Development, Energy, and Credit
- Senate Committee on FinanceInternational Trade, Customs, and Global CompetitivenessSocial Security, Pensions, and Family Policy · ChairmanTaxation and IRS Oversight
- Senate Committee on the Budget
- Senate Committee on the Judiciary · Chairman
- Joint Committee on Taxation
- United States Senate Caucus on International Narcotics Control
Source: congress-legislators committeesUpdated Nov 7, 2026, 3:00 PM ET
Legislation
Foreign Trade and International Finance · Passed Senate Aug 2026
Finance and Financial Sector · Passed Senate Aug 2026
Crime and Law Enforcement · Passed Senate Jun 2026
Crime and Law Enforcement · Passed Senate Jun 2026
Source: Congress.gov billsUpdated Nov 6, 2026, 3:27 PM ET
Voting record
Where Grassley sits in the U.S. Senate
Grassley is closer to the center than 60% of the chamber's Republicans.
Closest: Kevin Cramer, Pete Ricketts, Tom Cotton
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:06 PM ET
With Grassley’s party
- Votes with the chamber's Republicans99%
- Cosponsorships of the other party's bills36%
Black tick: the average of Republicans in the U.S. Senate.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: Grassley’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.
| Date | Bill | Grassley | Rep. majority | Dem. majority | Result |
|---|---|---|---|---|---|
| Jun 5, 2026 | S 2: Secure America Act | Yes | Yes | No | Passed 52–47 |
| Apr 16, 2026 | HJRES 140: Providing for congressional disapproval under chapter 8 of title 5, United States Code,… | Yes | Yes | No | Passed 50–49 |
| Feb 12, 2026 | HJRES 142: Disapproving the action of the District of Columbia Council in approving the D.C.… | Yes | Yes | No | Passed 49–47 |
| Jan 30, 2026 | HR 7148: Consolidated Appropriations Act, 2026 | Yes | Yes | No | Passed 71–29 |
| Dec 4, 2025 | HJRES 131: Providing for congressional disapproval under chapter 8 of title 5, United States Code,… | Yes | Yes | No | Passed 49–45 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time Grassley 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)
Elections
Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.
| Year | Race | Result | Margin |
|---|---|---|---|
| 2022 | U.S. Senate, Iowa | Won | R+12.2 |
| 2016 | U.S. Senate, Iowa | Won | R+24.5 |
| 2010 | U.S. Senate, Iowa | Won | R+31.1 |
| 2004 | U.S. Senate, Iowa | Won | R+42.3 |
| 1998 | U.S. Senate, Iowa | Won | R+37.9 |
| 1992 | U.S. Senate, Iowa | Won | R+42.4 |
Source: 99chambers results archive
Seats Grassley has held
- U.S. Senate, Iowa · 1981–2029
- U.S. House, IA-3 · 1975–1981
Source: 99chambers results archive
Who Grassley has run against
- Michael Franken (D) · 2022 general, won
- Patty Judge (D) · 2016 general, won
- Roxanne Conlin (D) · 2010 general, won
- Arthur Small (D) · 2004 general, won
- David Osterberg (D) · 1998 general, won
- Jean Lloyd-Jones (D) · 1992 general, won
Source: 99chambers results archive
How we know Grassley
One person, matched across every source we use.
- Bioguide G000386
- FEC S0IA00028
- Wikidata Q529294
- Ballotpedia Chuck Grassley
- Vote Smart 53293
- GovTrack 300048
- OpenSecrets N00001758
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Nov 7, 2026, 3:00 PM ET