People / Rankings / Breaks with party

Which Senate Democrats break with their party most often?

John Fetterman broke with Democrats most often among the 47 Senate Democrats in the 119th Congress: on 20.5% of party-line votes (median for Senate Democrats 3.9%), as of Nov 10, 2026.

Source: Voteview roll calls (UCLA) · How we measure · Updated Nov 10, 2026

Other rankings

Which Senate Democrats break with their party most often?
Rank	Member	Against own party
1	DJohn Fetterman PA Senate	20.5% 161 of 787
2	DJeanne Shaheen NH Senate	14.4% 116 of 805
3	IAngus S. King, Jr. ME Senate	12.8% 106 of 827
4	DMargaret Wood Hassan NH Senate	12.7% 105 of 827
5	DJacky Rosen NV Senate	10.4% 86 of 827
6	DTim Kaine VA Senate	9.9% 82 of 829
7	DMark R. Warner VA Senate	9.7% 78 of 804
8	DMark Kelly AZ Senate	8.6% 68 of 792
9	DCatherine Cortez Masto NV Senate	8.4% 69 of 825
10	DRuben Gallego AZ Senate	8.1% 60 of 738
11	DElissa Slotkin MI Senate	7.6% 62 of 818
12	DRichard J. Durbin IL Senate	6.5% 53 of 816
13	DMartin Heinrich NM Senate	6.1% 49 of 806
14	DChristopher A. Coons DE Senate	5.9% 47 of 793
15	DAmy Klobuchar MN Senate	5.8% 48 of 827
16	DJack Reed RI Senate	5.4% 45 of 832
17	DGary C. Peters MI Senate	5.2% 43 of 823
18	DJohn W. Hickenlooper CO Senate	5.1% 42 of 830
19	DRaphael G. Warnock GA Senate	5.0% 41 of 817
20	DSheldon Whitehouse RI Senate	4.9% 40 of 809
21	DAdam B. Schiff CA Senate	4.5% 37 of 821
22	DKirsten E. Gillibrand NY Senate	4.4% 36 of 822
23	DAndy Kim NJ Senate	4.1% 34 of 832
24	DJon Ossoff GA Senate	3.9% 31 of 794
T-25	DMichael F. Bennet CO Senate	3.0% 23 of 764
T-25	DPeter Welch VT Senate	3.0% 24 of 798
27	DCory A. Booker NJ Senate	2.9% 23 of 804
28	DBen Ray Luján NM Senate	2.4% 20 of 828
29	DMaria Cantwell WA Senate	2.3% 19 of 838
30	DAngela D. Alsobrooks MD Senate	2.2% 18 of 826
31	DTammy Baldwin WI Senate	2.1% 18 of 839
T-32	DTammy Duckworth IL Senate	1.7% 13 of 785
T-32	DAlex Padilla CA Senate	1.7% 14 of 811
T-34	DMazie K. Hirono HI Senate	1.3% 11 of 836
T-34	DBrian Schatz HI Senate	1.3% 11 of 830
T-36	DRichard Blumenthal CT Senate	1.2% 10 of 829
T-36	DCharles E. Schumer NY Senate	1.2% 10 of 836
T-38	DLisa Blunt Rochester DE Senate	0.5% 4 of 835
T-38	DJeff Merkley OR Senate	0.5% 4 of 833
T-38	DRon Wyden OR Senate	0.5% 4 of 823
T-41	DEdward J. Markey MA Senate	0.2% 2 of 834
T-41	DChristopher Murphy CT Senate	0.2% 2 of 817
T-41	DElizabeth Warren MA Senate	0.2% 2 of 826
T-44	DPatty Murray WA Senate	0.1% 1 of 795
T-44	IBernard Sanders VT Senate	0.1% 1 of 778
T-46	DTina Smith MN Senate	0.0% 0 of 798
T-46	DChris Van Hollen MD Senate	0.0% 0 of 826

1 member with fewer than 100 roll calls in this Congress is left out until their record is long enough to compare. Independents are ranked with the party they caucus with. Members tied on the shown value share a rank and are listed by name.