U.S. Senate · Republican · in Congress since 1975

Chuck Grassley

Senator from Iowa

Rank 158 of 537 in Congress and 74 of 272 Republicans. All three measures are on file.

What goes into the score

each part 0 to 100, higher is more independent

Pro-Israel lobby money

35% of the index

$331K

$331K in direct and earmarked gifts from pro-Israel PACs
TrackAIPAC notes: Next election 2028

Part score37.0

Source: TrackAIPAC, career total

PAC money share

35% of the index

15%

$162K from PACs and other committees of $1.10M raised
$708K from individual donors
2023 to 2028 Senate election period to date, filings through Jun 30, 2026

Part score79.0

Source: FEC candidate page

Stock trading

30% of the index

None

No trades are listed for this member in Quiver Quantitative's table for the last year. That table can miss members, so a missing entry is not proof of no trades.

Part score100.0

Source: Quiver Quantitative, last year

Votes that helped donors

not scored yet

This part will compare the member's votes with the industries that fund their campaigns. It needs donor industry data we cannot yet read reliably, so it is not part of any score today.

Scorecards beside the index

shown for context, never blended in

America First FoundationD-99 of 132 actions aligned with its positions on immigration, trade and foreign policyRead the scorecard

League of Conservation Voters0%2025 environmental score, lifetime 17%Read the scorecard

Heritage Action94%119th Congress score, lifetime 70%Read the scorecard

The rest of the Iowa delegation

5 members

RAshley HinsonIA-0270.1C RJoni ErnstIA Senate64.8C RZachary NunnIA-0363.2C RMariannette Miller-MeeksIA-0163.1C RRandy FeenstraIA-0455.5D

Scores are built from public records and the sources linked above. See something wrong? Tell us and we will correct it with a note. How the index works.