Bipartisan Leaders

Who works across party lines in the Wisconsin Legislature? These rankings are computed from 52,000+ co-sponsorship relationships across the 2025-26 session. Ceremonial bills are excluded — only policy legislation counts.

Individuals — Bidirectional Bipartisan Effort

#	Legislator	Authored	Bipartisan Score	Total Bills
1	Rep. Dean Kaufert R	8	100%	9
2	Rep. Patrick Snyder R	18	77%	21
3	Sen. Brad Pfaff D	16	77%	19
4	Rep. Steve Doyle D	7	76%	7
5	Rep. Sylvia Ortiz-Velez D	4	76%	5
6	Rep. Jill Billings D	14	74%	15
7	Sen. Sarah Keyeski D	13	71%	13
8	Rep. Russell Goodwin D	4	70%	6
9	Sen. Jesse James R	99	68%	108
10	Rep. Christine Sinicki D	15	68%	18
11	Sen. André Jacque R	104	67%	113
12	Rep. Todd Novak R	22	66%	23
13	Sen. Rachael Cabral-Guevara R	74	66%	82
14	Rep. Shelia Stubbs D	21	65%	23
15	Rep. Lisa Subeck D	21	65%	29
16	Rep. Jessie Rodriguez R	10	64%	10
17	Rep. Tara Johnson D	3	64%	3
18	Rep. Tyler August R	1	63%	2
19	Rep. Jenna Jacobson D	12	62%	12
20	Sen. Jodi Habush Sinykin D	14	62%	22
21	Sen. Dianne Hesselbein D	27	62%	33
22	Rep. Vincent Miresse D	13	60%	17
23	Rep. Benjamin Franklin R	20	60%	22
24	Rep. John Spiros R	6	60%	6
25	Sen. Mark Spreitzer D	24	60%	31

Cross-Party Pairs — Strongest Partnerships

#	Partner A	Partner B	Shared Policy Bills
1	Rep. Elijah Behnke R	Sen. Mark Spreitzer D	128
2	Rep. Jeffrey Mursau R	Sen. Mark Spreitzer D	118
3	Rep. Rob Kreibich R	Sen. Mark Spreitzer D	117
4	Rep. Lisa Subeck D	Sen. Jesse James R	110
5	Rep. Jerry O'Connor R	Sen. Mark Spreitzer D	104
6	Rep. Barbara Dittrich R	Sen. Mark Spreitzer D	96
7	Rep. Jeffrey Mursau R	Sen. Brad Pfaff D	94
8	Rep. Elijah Behnke R	Sen. Melissa Ratcliff D	83
9	Rep. Jeffrey Mursau R	Sen. Kristin Dassler-Alfheim D	80
10	Rep. Dean Kaufert R	Sen. Mark Spreitzer D	79
11	Rep. Daniel Knodl R	Sen. Mark Spreitzer D	77
12	Rep. Jeffrey Mursau R	Rep. Lisa Subeck D	74
13	Rep. Christine Sinicki D	Sen. Jesse James R	73
13	Rep. Shelia Stubbs D	Sen. Jesse James R	73
15	Rep. Paul Melotik R	Sen. Mark Spreitzer D	72
15	Rep. Rick Gundrum R	Sen. Mark Spreitzer D	72
15	Rep. Elijah Behnke R	Sen. Kristin Dassler-Alfheim D	72
15	Rep. Lisa Subeck D	Rep. Barbara Dittrich R	72
19	Rep. Elijah Behnke R	Rep. Lisa Subeck D	71
20	Rep. Jeffrey Mursau R	Sen. Melissa Ratcliff D	70
20	Rep. Jerry O'Connor R	Sen. Brad Pfaff D	70
22	Rep. Vincent Miresse D	Sen. Rachael Cabral-Guevara R	69
23	Rep. Todd Novak R	Sen. Mark Spreitzer D	68
23	Rep. Barbara Dittrich R	Sen. Kristin Dassler-Alfheim D	68
25	Rep. David Armstrong R	Sen. Mark Spreitzer D	66

Bipartisan Coalitions — Most Balanced Bills

#	Bill	R	D	Total	Balance	Label
1	AB97 Extension of eligibility under the Medical Assistance program for postpartum women. (FE)	35	54	89	65%	Strongly Bipartisan
2	SB23 Extension of eligibility under the Medical Assistance program for postpartum women. (FE)	34	53	87	64%	Strongly Bipartisan
3	AB27 Expanding veterans benefits to individuals who served in Laos in support of the United States during the Vietnam War.	22	26	48	85%	Gold Bipartisan
4	SB2 Expanding veterans benefits to individuals who served in Laos in support of the United States during the Vietnam War.	21	22	43	95%	Gold Bipartisan
4	AB194 Modifications to housing programs under the Wisconsin Housing and Economic Development Authority. (FE)	22	21	43	95%	Gold Bipartisan
6	AB974 A public affairs network trust fund, grants to the WisconsinEye Public Affairs Network, and making an appropriation. (FE	20	29	49	69%	Strongly Bipartisan
7	SB258 Advanced practice registered nurses, extending the time limit for emergency rule procedures, providing an exemption from	20	22	42	91%	Gold Bipartisan
8	SB180 Modifications to housing programs under the Wisconsin Housing and Economic Development Authority. (FE)	21	20	41	95%	Gold Bipartisan
9	SB264 Coverage of breast cancer screenings by the Medical Assistance program and health insurance policies and plans. (FE)	19	39	58	49%	Strongly Bipartisan
10	AB10 A sales and use tax exemption for the sale of gun safes. (FE)	19	27	46	70%	Strongly Bipartisan
11	SB12 A sales and use tax exemption for the sale of gun safes. (FE)	19	26	45	73%	Strongly Bipartisan
12	AB263 Coverage of breast cancer screenings by the Medical Assistance program and health insurance policies and plans. (FE)	18	38	56	47%	Bipartisan
13	AB477 Age for the issuance of a Missing Child Alert.	16	26	42	62%	Strongly Bipartisan
14	SB254 Funding for the War Memorial Center and making an appropriation. (FE)	21	16	37	76%	Strongly Bipartisan
15	AB373 Creating a refundable individual income tax credit for the parent of a stillbirth and making an appropriation. (FE)	20	16	36	80%	Strongly Bipartisan
15	SB379 Creating a refundable individual income tax credit for the parent of a stillbirth and making an appropriation. (FE)	20	16	36	80%	Strongly Bipartisan
17	AB257 Advanced practice registered nurses, extending the time limit for emergency rule procedures, providing an exemption from	16	19	35	84%	Gold Bipartisan
18	SB628 Notifying counties and tribes of an exceedance of groundwater protection standards or standards for PFAS. (FE)	15	34	49	44%	Bipartisan
19	AB635 Notifying counties and tribes of an exceedance of groundwater protection standards or standards for PFAS. (FE)	15	33	48	45%	Bipartisan
20	SB466 Age for the issuance of a Missing Child Alert.	15	26	41	58%	Strongly Bipartisan
21	SB203 Regulation of pharmacy benefit managers, fiduciary and disclosure requirements on pharmacy benefit managers, and applica	25	15	40	60%	Strongly Bipartisan
22	AB80 Ratification of the Social Work Licensure Compact. (FE)	15	24	39	63%	Strongly Bipartisan
22	AB173 Regulation of pharmacy benefit managers, fiduciary and disclosure requirements on pharmacy benefit managers, and applica	24	15	39	63%	Strongly Bipartisan
24	AB250 Funding for the War Memorial Center and making an appropriation. (FE)	21	15	36	71%	Strongly Bipartisan
25	AB604 Coverage under the Medical Assistance program for incarcerated individuals. (FE)	15	20	35	75%	Strongly Bipartisan

🤝 Coalition Builders — Most Cross-Party Partners

#	Legislator	Cross-Party Partners	Bipartisan Score	Overall Rank
1	Sen. André Jacque R	104	67.0%	#11
2	Sen. Jesse James R	99	68.0%	#9
3	Sen. Rachael Cabral-Guevara R	74	66.0%	#13
4	Sen. Jeff Smith D	58	42.0%	#97
5	Sen. Chris Larson D	56	36.0%	#120
6	Sen. Cory Tomczyk R	56	44.0%	#89
7	Sen. Kelda Roys D	50	41.0%	#100
8	Sen. LaTonya Johnson D	47	43.0%	#93
9	Sen. Van Wanggaard R	47	60.0%	#26
10	Sen. Patrick Testin R	42	54.0%	#46

Ranked by number of unique legislators from the opposing party co-sponsored with on policy bills.

📊 Highest Bipartisan Rate — Among Legislators with 10+ Policy Bills

#	Legislator	Bipartisan Rate	Bipartisan Bills	⭐ Gold	Policy Bills	Score
1	Rep. Patrick Snyder R	44%	8	⭐ 8	18	55.0%
2	Rep. Todd Novak R	32%	7	⭐ 7	22	36.2%
3	Rep. Robert Brooks R	31%	4	⭐ 4	13	23.3%
4	Rep. Nancy VanderMeer R	30%	3	⭐ 3	10	33.0%
5	Rep. Joel Kitchens R	25%	4	⭐ 4	16	25.2%
6	Rep. Tony Kurtz R	25%	5	⭐ 5	20	24.6%
7	Rep. David Armstrong R	24%	5	⭐ 5	21	30.8%
8	Rep. Paul Tittl R	23%	3	⭐ 3	13	31.4%
9	Sen. Jesse James R	22%	22	⭐ 20	99	25.5%
10	Rep. Jerry O'Connor R	20%	3	⭐ 2	15	24.9%

Rate = share of primary-authored policy bills that are Bipartisan or Gold (90%+ cross-party). Minimum 10 policy bills.

Rankings derived from co-sponsorship data across the 2025-26 Wisconsin legislative session. Ceremonial bills (resolutions, joint resolutions) are excluded to prevent score inflation. Cross-party metrics count partnerships where sponsors are from different parties. Party balance ratio measures the minority party's representation relative to the majority party in a bill's sponsor list (100% = perfectly balanced).