Most Conservative U.S. Senators of 2025

The top-ranked U.S. Senators by 2025 ILA scorecard score, based on substantive votes tracked by Institute for Legislative Analysis.

See the methodology page for how scores are calculated.

Rank	Lawmaker	Party / State / District	2025 Score
1	Sen. Rand Paul	R-KY	99%
2	Sen. Rick Scott	R-FL	89%
3	Sen. Mike Lee	R-UT	88%
4	Sen. Ron Johnson	R-WI	88%
5	Sen. Cynthia Lummis	R-WY	87%
6	Sen. John Kennedy	R-LA	87%
7	Sen. Bill Hagerty	R-TN	87%
8	Sen. Ted Cruz	R-TX	86%
9	Sen. Jim Banks	R-IN	86%
10	Sen. Ashley Moody	R-FL	85%
11	Sen. Ted Budd	R-NC	85%
12	Sen. Eric Schmitt	R-MO	84%
13	Sen. John Curtis	R-UT	84%
14	Sen. Joni Ernst	R-IA	83%
15	Sen. Tommy Tuberville	R-AL	83%
16	Sen. Bernie Moreno	R-OH	82%
17	Sen. John Barrasso	R-WY	82%
18	Sen. Jim Risch	R-ID	82%
19	Sen. Marsha Blackburn	R-TN	82%
20	Sen. Katie Britt	R-AL	81%
21	Sen. James Lankford	R-OK	81%
22	Sen. Steve Daines	R-MT	80%
23	Sen. Roger Marshall	R-KS	80%
24	Sen. Bill Cassidy	R-LA	80%
25	Sen. Michael Crapo	R-ID	79%
26	Sen. John Cornyn	R-TX	79%
27	Sen. Mitch McConnell	R-KY	78%
28	Sen. Dave McCormick	R-PA	78%
29	Sen. Tim Sheehy	R-MT	77%
30	Sen. Charles Grassley	R-IA	77%
31	Sen. John Hoeven	R-ND	77%
32	Sen. Tim Scott	R-SC	77%
33	Sen. Jon Husted	R-OH	76%
34	Sen. Tom Cotton	R-AR	76%
35	Sen. Thom Tillis	R-NC	76%
36	Sen. Peter Ricketts	R-NE	76%
37	Sen. John Thune	R-SD	76%
38	Sen. Jim Justice	R-WV	75%
39	Sen. Cindy Hyde-Smith	R-MS	75%
40	Sen. Kevin Cramer	R-ND	75%
41	Sen. Jerry Moran	R-KS	74%
42	Sen. John Boozman	R-AR	74%
43	Sen. Deb Fischer	R-NE	74%
44	Sen. Markwayne Mullin	R-OK	73%
45	Sen. Roger Wicker	R-MS	73%
46	Sen. Todd Young	R-IN	72%
47	Sen. Mike Rounds	R-SD	72%
48	Sen. Shelley Capito	R-WV	72%
49	Sen. Lindsey Graham	R-SC	72%
50	Sen. Joshua Hawley	R-MO	70%