Photo of Mike Zimmer
D Iowa Senate · District 35 On the 2026 ballot

Sen. Mike Zimmer

Compare
Total votes
586
all sessions
Attendance
98%
12 missed
Near the chamber average
With party
94%
of cast votes
Lower than 96% of chamber peers
Bipartisan score
3%
crosses aisle rarely
Higher than 90% of chamber peers
Sponsored
53
bills & resolutions
Near the chamber average
Committees
5
assignments
53 bills and resolutions

Sponsored bills

Total
53
Primary
53
Co-sponsor
0
This page
53
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Primary SJR 2009
In committee · Iowa Senate · Lead sponsor
A joint resolution proposing an amendment to the Constitution of the State of Iowa relating to corporate participation in the political process.

Maddy summarySJR 2009 proposes a constitutional amendment in Iowa that prohibits corporations from making financial contributions or participating in election campaigns, ballot measures, or political committee activities. It specifically exempts corporations formed to create, sell, or operate election equipment. The amendment would require voter approval after legislative referral, as it seeks to amend the state constitution. This change directly affects all Iowa corporations engaging in political spending, excluding only election technology businesses. The bill does not alter existing laws governing corporate activities beyond political participation.

In committee Feb 12, 2026 0 co-sponsors
Primary SF 2269
In committee · Iowa Senate · Lead sponsor
A bill for an act appropriating moneys to Iowa state university of science and technology for use by the Iowa nutrient research center in supporting the Iowa water quality information systems.

Maddy summaryThis bill appropriates $500,000 from Iowa's water quality infrastructure fund for the 2026-2027 fiscal year to Iowa State University of Science and Technology. The funds will support the Iowa Nutrient Research Center in administering the Iowa Water Quality Information Systems, specifically using sensor technology to collect data on nutrient impacts. The primary purpose is to monitor how nutrients affect the state's surface waters, including rivers and lakes. This directly affects the data collection and monitoring capabilities of the Iowa Nutrient Research Center and the state's water quality management efforts.

In committee Feb 11, 2026 0 co-sponsors
Primary SF 2225
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to property law, including rental properties, manufactured home communities, mobile home parks, and actions relating to such properties, making penalties applicable, and including effective date and applicability provisions.

Maddy summaryThis Iowa bill (SF 2225) sets new rules for landlords in rental properties, manufactured home communities, and mobile home parks. It limits when landlords can evict tenants (requiring serious violations or business reasons), mandates 180 days' written notice for rent increases, and caps late fees based on rent amount (e.g., $12/day max for rents under $700/month). Landlords must justify rent hikes above inflation with specific costs like repairs, property taxes, or utility expenses. The changes apply to new evictions and rent increases starting upon the bill's effective date.

In committee Feb 10, 2026 0 co-sponsors
Primary SF 2226
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to the use of automated adjudication systems by health carriers, and including civil penalties.

Maddy summaryThis bill (SF 2226) requires health insurance carriers in Iowa to use human clinical reviewers before automatically denying or downcoding claims submitted by health care providers. It mandates detailed written notices to providers explaining any automated denial or downcode, including the reason, policy justification, and appeal rights (with 30 days to appeal). Health carriers must also disclose their automated system use and oversight processes to the insurance commissioner and maintain documentation for five years. The law applies directly to health carriers (insurance companies, HMOs, etc.) and affects health care providers who submit claims for reimbursement.

In committee Feb 10, 2026 0 co-sponsors
Primary SF 2123
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to identification markings on firearms and firearm parts, and providing penalties.

Maddy summarySF 2123 requires individuals who manufacture firearms (not licensed dealers) to obtain a unique serial number or identification mark from Iowa's Department of Public Safety by December 1, 2026, and permanently affix it to the firearm or unfinished frame/receiver. It prohibits removing, altering, or defacing existing identification marks on firearms and bans possession of unfinished frames/receivers without a mark after 2026. The bill exempts federally licensed manufacturers, antique firearms, pre-existing firearms, and transfers to law enforcement. Violations carry class C felony penalties, but the law focuses on creating a tracking system for homemade firearms and parts.

In committee Jan 28, 2026 0 co-sponsors
Primary SF 2127
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to firearm safety training requirements for a permit to acquire pistols or revolvers, and making penalties applicable.

Maddy summaryThis bill requires new applicants for a permit to acquire pistols or revolvers in Iowa to complete firearm safety training, expanding a current requirement that previously applied only to applicants for permits to carry weapons. It specifies that training is not needed for permit renewals issued after July 1, 2026, or for certain renewal scenarios. The bill also adds penalties: transferring a pistol or revolver to someone who hasn’t completed the required training becomes a class D felony, punishable by up to five years in prison and a fine of $1,025-$10,245. These changes align with federal requirements for pistol purchases and aim to standardize safety training across permit types.

In committee Jan 28, 2026 0 co-sponsors
Primary SF 2047
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to insurance coverage for prescription insulin drugs.

Maddy summarySF 2047 requires most health insurance plans in Iowa to cap out-of-pocket costs for covered insulin prescriptions at $25 per prescription for a 31-day supply. This applies to four specific insulin types: rapid-acting, short-acting, intermediate-acting, and long-acting. The law affects insured individuals with diabetes who use covered insulin drugs under qualifying health plans, effective January 1, 2027. It does not apply to certain specialized coverage like Medicare supplements or short-term medical plans.

In committee Jan 22, 2026 0 co-sponsors
Primary SJR 2005
In committee · Iowa Senate · Lead sponsor
A joint resolution proposing an amendment to the Constitution of the State of Iowa relating to the right of all youths of this state to a comprehensive public education.

Maddy summarySJR 2005 is a proposed constitutional amendment requiring Iowa to guarantee all youths a comprehensive public education meeting or exceeding national standards through public schools and qualified educators. It mandates instruction in core subjects including reading, math, science, history, social studies, arts, and human development, as determined by the legislature or education agencies. The resolution, currently referred to a committee after introduction on January 21, 2026, must next be published for three months and referred to the next general assembly before potentially going to voters for ratification. This is a procedural step toward amending Iowa's constitution, not an immediate law.

In committee Jan 22, 2026 0 co-sponsors
Primary SF 2048
In committee · Iowa Senate · Lead sponsor
A bill for an act relating to insurance coverage and Medicaid coverage for annual lung cancer screenings for at-risk individuals.

Maddy summaryThis bill requires health insurance plans and Medicaid to cover annual low-dose CT scans for lung cancer screening for specific at-risk individuals. It defines "at-risk" as people aged 40+ who smoke, have a family history of lung cancer, or have regular exposure to certain carcinogens like asbestos or radon. Private insurance must cover these screenings without cost-sharing (like deductibles or copays), effective January 1, 2027, for most health plans. Medicaid coverage is contingent on securing a federal waiver, after which it must also cover these screenings. The bill excludes certain specialized insurance types, such as accident-only or dental coverage, from these requirements.

In committee Jan 21, 2026 0 co-sponsors
Primary SJR 2003
In committee · Iowa Senate · Lead sponsor
A joint resolution proposing an amendment to the Constitution of the State of Iowa relating to the right to reproductive care.

Maddy summaryThis bill proposes adding a constitutional amendment to Iowa's Constitution recognizing reproductive freedom as a fundamental right. It would protect services including contraception, abortion, prenatal care, and miscarriage management, stating the state cannot interfere with these private decisions unless a "compelling state interest" is met using the "least restrictive means." The amendment allows state regulation of abortion after fetal viability but prohibits banning abortions medically necessary to protect a patient's life or health. This would apply to all Iowa residents seeking reproductive care and requires voter approval after legislative passage.

In committee Jan 20, 2026 0 co-sponsors
Showing 11 to 20 of 53 bills
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