Who Chuck Grassley votes with
Across 2071 divided votes — ones where both sides drew a real bloc. Unanimous votes are excluded: everyone agrees with everyone on those, so counting them would measure attendance rather than agreement.
Most often with
| Member | Party | Agreement |
|---|---|---|
| Alan Armstrong | R | 100.0% (119/119) |
| David McCormick | R | 99.5% (755/759) |
| Bernie Moreno | R | 99.2% (775/781) |
| Jim Banks | R | 99.2% (768/774) |
| James C. Justice | R | 99.1% (744/751) |
| Ashley Moody | R | 99.0% (763/771) |
| John R. Curtis | R | 99.0% (758/766) |
| Tim Sheehy | R | 99.0% (754/762) |
| Jon Husted | R | 98.5% (768/780) |
| Ted Budd | R | 94.6% (1219/1289) |
| Eric Schmitt | R | 94.5% (1226/1298) |
| Pete Ricketts | R | 94.4% (1225/1298) |
| Katie Boyd Britt | R | 93.8% (1194/1273) |
| John Cornyn | R | 91.7% (1851/2019) |
| Joni Ernst | R | 91.0% (1835/2017) |
| Todd Young | R | 90.5% (1842/2035) |
| Deb Fischer | R | 90.1% (1842/2045) |
| John Barrasso | R | 90.0% (1738/1931) |
| Mike Crapo | R | 90.0% (1810/2012) |
| James E. Risch | R | 89.6% (1757/1961) |
Least often with
| Member | Party | Agreement |
|---|---|---|
| Lisa Blunt Rochester | D | 1.0% (8/779) |
| Angela D. Alsobrooks | D | 2.9% (22/771) |
| Andy Kim | D | 4.0% (32/792) |
| Adam B. Schiff | D | 4.9% (38/773) |
| Peter Welch | D | 7.7% (98/1279) |
| Elissa Slotkin | D | 7.7% (59/763) |
| Ruben Gallego | D | 8.7% (60/688) |
| Jeff Merkley | D | 10.8% (218/2019) |
| Elizabeth Warren | D | 11.1% (228/2050) |
| Christopher Murphy | D | 11.1% (225/2031) |
| Ron Wyden | D | 11.2% (229/2039) |
| Patty Murray | D | 11.2% (224/2001) |
| Edward J. Markey | D | 11.2% (228/2038) |
| Bernard Sanders | I | 11.2% (212/1895) |
| Chris Van Hollen | D | 11.3% (227/2001) |
| Brian Schatz | D | 11.3% (231/2042) |
| Richard Blumenthal | D | 11.5% (236/2048) |
| Tina Smith | D | 11.6% (233/2015) |
| Mazie K. Hirono | D | 11.6% (239/2062) |
| Maria Cantwell | D | 11.6% (239/2060) |
Only members with at least 20 comparable votes are listed. Agreement is not endorsement and not coordination — two members can vote the same way for opposite reasons, and the record almost never says why.