Vote-alignment leaderboard

How often each member of Congress votes with their own party's majority on party-line roll calls — and how often they vote across party lines. This is a plain, descriptive measure computed from CivicGate's roll-call record, not a judgment: a high or low rate has many legitimate causes. Party-unity uses the standard method (party-line votes where the two parties' majorities differ). Only members with at least a handful of party-line votes on record are ranked. Here “party majority” means arithmetic — more than half of that party's members who voted — not the majority party that runs the chamber.

Party-unity measures how often a member sides with their party on the votes where the two parties split — a neutral description of voting behavior, not a loyalty score. Learn more →

Computed from Congress.gov roll-call votes · Congress 119

Votes most with party Votes most across party lines

#	Member	Party	State	Votes with party	Across party lines	Party-line votes
1	Adam B. SchiffSenate	D	California	100%	0%	26
2	Alan ArmstrongSenate	R	Oklahoma	100%	0%	26
3	Alex PadillaSenate	D	California	100%	0%	26
4	Angela D. AlsobrooksSenate	D	Maryland	100%	0%	26
5	Ashley MoodySenate	R	Florida	100%	0%	26
6	Bernie MorenoSenate	R	Ohio	100%	0%	26
7	Bill HagertySenate	R	Tennessee	100%	0%	26
8	Charles E. SchumerSenate	D	New York	100%	0%	26
9	Chuck GrassleySenate	R	Iowa	100%	0%	26
10	Dan SullivanSenate	R	Alaska	100%	0%	26
11	Deb FischerSenate	R	Nebraska	100%	0%	26
12	Edward J. MarkeySenate	D	Massachusetts	100%	0%	26
13	Elizabeth WarrenSenate	D	Massachusetts	100%	0%	26
14	Jack ReedSenate	D	Rhode Island	100%	0%	26
15	James C. JusticeSenate	R	West Virginia	100%	0%	26
16	James LankfordSenate	R	Oklahoma	100%	0%	26
17	Jim BanksSenate	R	Indiana	100%	0%	26
18	John BarrassoSenate	R	Wyoming	100%	0%	26
19	John BoozmanSenate	R	Arkansas	100%	0%	26
20	John HoevenSenate	R	North Dakota	100%	0%	26
21	John KennedySenate	R	Louisiana	100%	0%	26
22	John R. CurtisSenate	R	Utah	100%	0%	26
23	John ThuneSenate	R	South Dakota	100%	0%	26
24	John W. HickenlooperSenate	D	Colorado	100%	0%	26
25	Jon HustedSenate	R	Ohio	100%	0%	26
26	Joni ErnstSenate	R	Iowa	100%	0%	26
27	Jon OssoffSenate	D	Georgia	100%	0%	26
28	Margaret Wood HassanSenate	D	New Hampshire	100%	0%	26
29	Maria CantwellSenate	D	Washington	100%	0%	26
30	Mark R. WarnerSenate	D	Virginia	100%	0%	26
31	Michael F. BennetSenate	D	Colorado	100%	0%	26
32	Mike CrapoSenate	R	Idaho	100%	0%	26
33	Mike LeeSenate	R	Utah	100%	0%	26
34	Mike RoundsSenate	R	South Dakota	100%	0%	26
35	Patty MurraySenate	D	Washington	100%	0%	26
36	Rick ScottSenate	R	Florida	100%	0%	26
37	Roger F. WickerSenate	R	Mississippi	100%	0%	26
38	Ron WydenSenate	D	Oregon	100%	0%	26
39	Shelley Moore CapitoSenate	R	West Virginia	100%	0%	26
40	Steve DainesSenate	R	Montana	100%	0%	26
41	Tim SheehySenate	R	Montana	100%	0%	26
42	Tina SmithSenate	D	Minnesota	100%	0%	26
43	Todd YoungSenate	R	Indiana	100%	0%	26
44	Tom CottonSenate	R	Arkansas	100%	0%	26
45	Cindy Hyde-SmithSenate	R	Mississippi	100%	0%	25
46	Eric SchmittSenate	R	Missouri	100%	0%	25
47	James E. RischSenate	R	Idaho	100%	0%	25
48	Kevin CramerSenate	R	North Dakota	100%	0%	25
49	Pete RickettsSenate	R	Nebraska	100%	0%	25
50	Roger MarshallSenate	R	Kansas	100%	0%	25
51	Tim ScottSenate	R	South Carolina	100%	0%	25
52	Tommy TubervilleSenate	R	Alabama	100%	0%	25
53	Cynthia M. LummisSenate	R	Wyoming	100%	0%	24
54	Mark KellySenate	D	Arizona	100%	0%	24
55	Raphael G. WarnockSenate	D	Georgia	100%	0%	24
56	Ron JohnsonSenate	R	Wisconsin	100%	0%	24
57	Ted BuddSenate	R	North Carolina	100%	0%	24
58	Amy KlobucharSenate	D	Minnesota	100%	0%	23
59	Katie Boyd BrittSenate	R	Alabama	100%	0%	23
60	Ruben GallegoSenate	D	Arizona	100%	0%	22
61	Marsha BlackburnSenate	R	Tennessee	100%	0%	21
62	David MccormickSenate	R	Pennsylvania	100%	0%	769
63	Ted CruzSenate	R	Texas	100%	0%	749
64	John CornynSenate	R	Texas	100%	0%	785
65	Cory A. BookerSenate	D	New Jersey	100%	0%	756
66	Andy KimSenate	D	New Jersey	99%	1%	784
67	Peter WelchSenate	D	Vermont	99%	1%	750
68	Bill CassidySenate	R	Louisiana	96%	4%	26
69	Brian SchatzSenate	D	Hawaii	96%	4%	26
70	Christopher MurphySenate	D	Connecticut	96%	4%	26
71	Jeff MerkleySenate	D	Oregon	96%	4%	26
72	Jerry MoranSenate	R	Kansas	96%	4%	26
73	Josh HawleySenate	R	Missouri	96%	4%	26
74	Richard BlumenthalSenate	D	Connecticut	96%	4%	26
75	Tammy BaldwinSenate	D	Wisconsin	96%	4%	26
76	Tammy DuckworthSenate	D	Illinois	96%	4%	26
77	Kirsten E. GillibrandSenate	D	New York	96%	4%	25
78	Christopher A. CoonsSenate	D	Delaware	95%	5%	21
79	Thomas TillisSenate	R	North Carolina	95%	5%	20
80	Elissa SlotkinSenate	D	Michigan	92%	8%	26
81	Gary C. PetersSenate	D	Michigan	92%	8%	25
82	Mazie K. HironoSenate	D	Hawaii	92%	8%	25
83	Rand PaulSenate	R	Kentucky	91%	9%	23
84	Jacky RosenSenate	D	Nevada	88%	12%	26
85	Martin HeinrichSenate	D	New Mexico	88%	12%	26
86	Sheldon WhitehouseSenate	D	Rhode Island	88%	12%	25
87	Tim KaineSenate	D	Virginia	85%	15%	26
88	Jeanne ShaheenSenate	D	New Hampshire	84%	16%	25
89	John FettermanSenate	D	Pennsylvania	83%	17%	741
90	Richard J. DurbinSenate	D	Illinois	81%	19%	26
91	Susan M. CollinsSenate	R	Maine	77%	23%	26

Votes with party = the share of party-line-eligible roll calls (where the two parties' majorities differed) on which the member voted WITH their own party's majority. Across party lines = the share of those same votes cast with the other major party's majority. Party-line votes = the denominator (only members above a small floor are ranked). Party-unity is defined only for the two major parties, which is why members of other parties don't appear. See any member's Voting alignment section for who they vote most and least like.