Who David McCormick votes with
Across 780 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 |
|---|---|---|
| Bill Hagerty | R | 99.9% (752/753) |
| John Barrasso | R | 99.9% (775/776) |
| John Hoeven | R | 99.9% (771/772) |
| Marsha Blackburn | R | 99.9% (738/739) |
| Tim Scott | R | 99.9% (759/760) |
| Bernie Moreno | R | 99.7% (775/777) |
| James Lankford | R | 99.7% (775/777) |
| Jim Banks | R | 99.7% (769/771) |
| Katie Boyd Britt | R | 99.7% (757/759) |
| Kevin Cramer | R | 99.7% (749/751) |
| Mike Crapo | R | 99.7% (768/770) |
| Roger Marshall | R | 99.7% (772/774) |
| Ted Cruz | R | 99.7% (738/740) |
| Cynthia M. Lummis | R | 99.6% (752/755) |
| Eric Schmitt | R | 99.6% (767/770) |
| James E. Risch | R | 99.6% (756/759) |
| John Cornyn | R | 99.6% (770/773) |
| Ron Johnson | R | 99.6% (767/770) |
| Chuck Grassley | R | 99.5% (755/759) |
| Cindy Hyde-Smith | R | 99.5% (760/764) |
Least often with
| Member | Party | Agreement |
|---|---|---|
| Tina Smith | D | 0.1% (1/740) |
| Chris Van Hollen | D | 0.1% (1/768) |
| Patty Murray | D | 0.3% (2/737) |
| Christopher Murphy | D | 0.3% (2/760) |
| Ron Wyden | D | 0.4% (3/767) |
| Elizabeth Warren | D | 0.4% (3/766) |
| Edward J. Markey | D | 0.4% (3/774) |
| Bernard Sanders | I | 0.4% (3/721) |
| Lisa Blunt Rochester | D | 0.5% (4/776) |
| Jeff Merkley | D | 0.5% (4/774) |
| Richard Blumenthal | D | 1.0% (8/771) |
| Brian Schatz | D | 1.2% (9/771) |
| Charles E. Schumer | D | 1.3% (10/776) |
| Mazie K. Hirono | D | 1.4% (11/777) |
| Tammy Duckworth | D | 1.6% (12/732) |
| Maria Cantwell | D | 1.8% (14/778) |
| Alex Padilla | D | 1.9% (14/752) |
| Tammy Baldwin | D | 2.1% (16/779) |
| Angela D. Alsobrooks | D | 2.1% (16/767) |
| Ben Ray Luján | D | 2.6% (20/768) |
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.