RepublicanIn office since Jan 1981

Chuck Grassley

U.S. Senator from Iowa since 1981. Ran in 13 elections between 1968 and 2022, winning 13. Next on the ballot in 2028.

U.S. Senator from IowaBorn 1933

Official website Wikipedia Congress.gov FEC filings

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

119th Congress · 97 sponsored · 0 became law

No bills in this list for the 119th Congress.

Source: Congress.gov billsUpdated Nov 6, 2026, 3:27 PM ET

Voting record

119th Congress · placement by roll-call votes

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.

1968197219761980198419881992199620002004200820122016202020242028Iowa House of Representatives, District BUTLERIowa House of Representatives, District 10 Iowa House of Representatives, District 37 U.S. House, IA-3 U.S. Senate, Iowa

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	Seat	+/−
2022	U.S. Senate, Iowa	Won	R+12.2	R+8.4	+3.8
2016	U.S. Senate, Iowa	Won	R+24.4	R+10.1	+14.3
2010	U.S. Senate, Iowa	Won	R+31.0	D+9.7	+40.7
2004	U.S. Senate, Iowa	Won	R+42.3	R+0.7	+41.6
1998	U.S. Senate, Iowa	Won	R+37.9	D+11.5	+49.4
1992	U.S. Senate, Iowa	Won	R+42.4	D+7.5	+49.9
1986	U.S. Senate, Iowa	Won	R+32.5	R+7.4	+25.1
1980	U.S. Senate, Iowa	Won	R+7.9	R+14.1	−6.2
1978	U.S. House, IA-3	Won	R+49.6	—	—
1976	U.S. House, IA-3	Won	R+12.9	—	—
1972	Iowa House of Representatives, District 37	Won	R+41.5	—	—
1970	Iowa House of Representatives, District 10	Won	R+26.4	—	—
1968	Iowa House of Representatives, Butler	Won	—	—	—