Not affiliated with the Michigan Legislature · an independent reference by Fifty Domes

PlansSign in

Legislators › Senate › District 13

Official portrait of Rosemary Bayer

Photo: Michigan Senate Democrats. Source.

13Senate
District

Senator

Rosemary Bayer

SeatSenate District 13
PartyDemocratic
Capitol officeRoom 3100 · Binsfeld Office Building
Mailing addressRoom 3100, Binsfeld Building P.O. Box 30036, Lansing, MI 48909
Capitol phone517-373-2417
Write tosenrbayer@senate.michigan.gov (official address)
HometownKeego Harbor
TenureServing since January 1, 2019
Term limited2030

Committees 6

Bills, 2025 to 2026 session 55 as principal author · 371 as coauthor

All 55 bills as principal author ›

Coauthor of SB 105, SB 136, SB 158, SB 25, SB 293, SB 294, SB 304, SB 349, SB 373, SB 413, SB 433, SB 456 and 359 more.

Bills and sponsors: Open States bulk data (public domain dedication), 2026-11-public.pgdump; status is read from the official actions. About the momentum score

Effectiveness 103rd Legislature, 2025 to 2026

0.4827th of 38 in the Senate
31st percentile
Bills & joint resolutions authored51
… passed committee / chamber / both19 / 9 / 0
… became law0
Carried in the other chamber (became law)0 (0)
Points vs. Senate majority average37 ÷ 76.75 = 0.48
Most-authored topicsChildren, families & social services (14), Environment, water & wildlife (10), Business, jobs & the economy (10)

Senate rankings · How the score works. A count of bill progress, not a judgment of the member's work.

Closest allies co-authorship, 2025 to 2026

“Written together” = 2025 to 2026 session bills and joint resolutions on which both are principal author or coauthor (measures with more than 60 sponsors are left out). Sharing bills does not imply a personal or political alliance.

District 13

Counties
Oakland, Wayne
Find your district
Who represents me?
House members sharing a county
Tyrone Carter (1), Tullio Liberati (2), Alabas Farhat (3), Karen Whitsett (4), Regina Weiss (5), Natalie Price (6), Tonya Phillips (7), Helena Scott (8), Joe Tate (9), Veronica Paiz (10), Donavan McKinney (11), Kimberly Edwards (12), Mike McFall (14), Erin Byrnes (15), Stephanie Young (16), Laurie Pohutsky (17), Jason Hoskins (18), Samantha Steckloff (19), Noah Arbit (20), Kelly Breen (21), Matt Koleszar (22), Jason Morgan (23), Ranjeev Puri (24), Peter Herzberg (25), Dylan Wegela (26), Rylee Linting (27), Jamie Thompson (28), Jim DeSana (29), Reggie Miller (31), Ann Bollin (49), Matt Maddock (51), Mike Harris (52), Brenda Carter (53), Donni Steele (54), Mark Tisdel (55), Sharon MacDonell (56), Tom Kuhn (57), Josh Schriver (66), David Martin (68), Mike Mueller (72)
Senate District 13 and neighboursSenate District 1: Erika Geiss (D)Senate District 2: Sylvia Santana (D)Senate District 3: Stephanie Chang (D)Senate District 4: Darrin Camilleri (D)Senate District 5: Dayna Polehanki (D)Senate District 6: Mary Cavanagh (D)Senate District 7: Jeremy Moss (D)Senate District 8: Mallory McMorrow (D)Senate District 9: Michael Webber (R)Senate District 10: Paul Wojno (D)Senate District 11: Veronica Klinefelt (D)Senate District 13: Rosemary Bayer (D)Senate District 14: Sue Shink (D)Senate District 15: Jeff Irwin (D)Senate District 22: Lana Theis (R)Senate District 23: Jim Runestad (R)Senate District 24: Ruth Johnson (R)Senate District 25: Dan Lauwers (R)WayneOaklandMacombSt. ClairWashtenawLivingston123456789101113141522232425
District 13 outlined; neighbours link to their members. Full map › · Census 2024 boundaries, simplified.

Official district map: see the official Senate page.

Lobbyist reports naming this member 2025 to 2026

No lobbyist expenditure reports naming this member are in our data.

Registered lobbyists and the organizations they represent are on our sister site, the Michigan Lobby Guide.

A reported expenditure is a legal, disclosed activity and does not imply wrongdoing.

Source

Copied from https://senatedems.com/bayer on November 2, 2026, through Open States people data (CC0), checked against official legislature rosters. Not endorsed by the Michigan State Senate.

Sources for this page

Copied from public pages of the Michigan House of Representatives and the Michigan State Senate, through Open States people data (CC0), checked against official legislature rosters. Neither Michigan Capitol Guide nor this information, as presented here, is endorsed by the Michigan House of Representatives or the Michigan State Senate.