1st Senate District

District

Candidates

Candidates Registered for WI Senate District 1
Data shows every Democratic or Republican candidate registered to run in 2026 plus the incumbent. See footnote for incumbent reelection status.
candidates	registration_date1	Since 1/1/2025 & reported by 2026-02-04
		contributions	disbursements
Democratic
Sean R Grorich	2025-04-16	$22,131.66 in 160 contributions from 130 unique donors. Median: $100	$1,669.50 in 17 transactions
Republican
Andre M Jacque (I)2	2009-01-21	$750.00 in 2 contributions from 2 unique donors. Median: $375	no disbursements reported
1 The date this candidate's committee first registered (for any office). Click the link for details.
2 registered to run in 2026
Data last updated on 2026-02-05

Past election results

Election Results in Wisconsin State Senate District 1
	votes			Dem. %1	margin (Dem. - Rep.)
	total	Dem.	Rep.		votes	points2
2016 President	94,493	34,918	54,064	39.2%	−19,146	−21.5
2016 Senator	94,127	33,907	56,951	37.3%	−23,044	−25.4
2018 Governor	85,232	33,545	50,268	40.0%	−16,723	−20.0
2018 Senator	84,808	39,914	44,851	47.1%	−4,937	−5.8
2020 President	108,317	42,479	64,128	39.8%	−21,649	−20.3
2022 Governor	89,807	36,474	52,342	41.1%	−15,868	−17.9
2022 Senator	89,662	34,663	54,878	38.7%	−20,215	−22.6
2024 President	114,756	44,924	68,197	39.7%	−23,273	−20.6
2024 Senator	113,949	45,047	66,397	40.4%	−21,350	−19.2
2024 NA	NA	NA	NA	NA	NA	NA
2025 WI Sup. Ct.3	78,559	35,200	43,322	44.8%	−8,122	−10.3
1 Share of the two-party vote. For Rep. share, subtract from 100.
2 Dem % of the two-party vote minus Rep % of the two-party vote
3 Formally nonpartisan candidates assigned party labels based on state endorsements
Election results allocated into 2024 district boundaries based on population overlap. Calculations by John Johnson (johndjohnson.info).

District demographics