freedomrankings.com
US Senator — Iowa
135 Hart Senate Office Building Washington, DC 20510
Computed from STOCK Act filings, roll-call records, annual financial disclosures, and FEC receipts. Every component links to its source and can be reproduced from the bulk data export.
Disclosure compliance measured from public filings. Not a rating of this official's politics or job performance.
98
Full compliance
Voted on 868 of 892 recorded roll calls (24 missed).
Source: Congress.gov / House Clerk / Senate roll-call records view
Annual financial disclosure on file for 2025.
Source: House Clerk / Senate Public Records annual PFD filings view
Top 10 donors account for 13% of 227 itemized receipts.
Source: FEC itemized receipts (Schedule A) view
Not scored — no records
These components carry no weight for this official. Absent records are not counted as failures — the remaining weights are rescaled to 100%.
Counts from the roll-call and sponsorship record. No composite score and no ideology rating — just the underlying numbers, each with what it is measured against.
Votes cast
868
of 892 roll calls · 2.7% missed
Bills sponsored
1456
6,166 cosponsored
Committees
6
standing committees
In office
45.6
years, this term
Party unity
99.2%
Chuck Grassley sided with the majority of Republicans on 859 of 866 votes where their party took a clear position, breaking ranks 7 times.
Counts Yea and Nay only. “Present” takes no side, so counting it as breaking ranks would penalize something that isn't. Roll calls where the member's party split evenly are excluded — there is no majority to agree with. This measures voting alongside one's party, which is not the same as ideology, and it is not comparable to DW-NOMINATE. See the methodology.
Salary: public record. Net worth: midpoint estimate from financial-disclosure asset brackets (range shown below it; not exact). Campaign totals: FEC filings.
Loading FEC campaign finance data…
Loading filings…
Transactions disclosed under the STOCK Act via Periodic Transaction Reports (PTRs) filed with the House Clerk. Source. Senate data coming soon.
11/14 positions aligned. 79% drawn from an editorial summary of public record. How this score is calculated.
6/6 aligned · est.
2/2 aligned · est.
2/2 aligned · est.
0/2 aligned · est.
1/1 aligned · est.
0/1 aligned · est.
Oppose government industrial subsidies
Promise keptVoted NAY on CHIPS and Science Act (H.R.4346). Aligned with oppose government industrial subsidies.
Confirmed from the official roll-call record.
Support lower taxes
Promise keptVoted YEA on Tax Cuts and Jobs Act (H.R.1). Aligned with support lower taxes.
Confirmed from the official roll-call record.
Protect gun rights from new restrictions
Promise keptVoted NAY on Bipartisan Safer Communities Act (S.2938). Aligned with protect gun rights from new restrictions.
Confirmed from the official roll-call record.
Oppose expanded government spending
Promise keptVoted NAY on Inflation Reduction Act (H.R.5376). Aligned with oppose expanded government spending.
Confirmed from the official roll-call record.
Oppose warrantless surveillance of Americans
Promise brokenVoted YEA on FISA Section 702 Reauthorization (H.R.7888). Diverged from oppose warrantless surveillance of americans.
Confirmed from the official roll-call record.
Protect religious liberty in marriage law
Promise keptVoted NAY on Respect for Marriage Act (H.R.8404). Aligned with protect religious liberty in marriage law.
Confirmed from the official roll-call record.
Support lower taxes
Expected alignmentExpected to have supported the Tax Cuts and Jobs Act (H.R.1) based on the predominant party-line vote. Not yet confirmed from the roll-call record.
Inferred from party-line voting pattern. Not yet confirmed from the roll-call record.
Protect gun rights from new restrictions
Expected alignmentExpected to have opposed the Bipartisan Safer Communities Act (S.2938) based on the predominant party-line vote. Not yet confirmed from the roll-call record.
Inferred from party-line voting pattern. Not yet confirmed from the roll-call record.
Oppose expanded government spending
Expected alignmentExpected to have opposed the Inflation Reduction Act (H.R.5376) based on the predominant party-line vote. Not yet confirmed from the roll-call record.
Inferred from party-line voting pattern. Not yet confirmed from the roll-call record.
Oppose government industrial subsidies
Expected alignmentExpected to have opposed the CHIPS and Science Act (H.R.4346) based on the predominant party-line vote. Not yet confirmed from the roll-call record.
Inferred from party-line voting pattern. Not yet confirmed from the roll-call record.
Protect religious liberty in marriage law
Expected alignmentExpected to have opposed the Respect for Marriage Act (H.R.8404) based on the predominant party-line vote. Not yet confirmed from the roll-call record.
Inferred from party-line voting pattern. Not yet confirmed from the roll-call record.
Require Congress to approve major regulations
Expected alignmentExpected to have supported the REINS Act (H.R.277) based on the predominant party-line vote. Not yet confirmed from the roll-call record.
Inferred from party-line voting pattern. Not yet confirmed from the roll-call record.
Oppose warrantless surveillance of Americans
Expected divergenceExpected to have supported FISA Section 702 reauthorization (H.R.7888) based on the predominant party-line vote. Not yet confirmed from the roll-call record.
Inferred from party-line voting pattern. Not yet confirmed from the roll-call record.
Support federal marijuana reform
Expected divergenceExpected to have opposed the MORE Act (H.R.3617) based on the predominant party-line vote. Not yet confirmed from the roll-call record.
Inferred from party-line voting pattern. Not yet confirmed from the roll-call record.