Michigan State Senate District 13
Tue, Nov 3 · Represented by Rosemary Bayer Democratic · Member list as of Oct 28Rosemary Bayer isn’t on the ballot for this seat
District lines changed after the last result we have. That result isn't shown.
- Last result, older lines
- Rosemary Bayer (Democratic) won by 14.3 points, 2022
More about this race
Open seat
The current holder, Rosemary Bayer, is not on the candidate list.
Source: mi-boe.entellitrak.com, dated Oct 28
District map
- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
Map settings
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History (14 elections for this seat)
We don’t have results for the current lines.
Our source for older results, Carl Klarner’s State Legislative Election Returns, ends in 2022. The rows under History are from the older district with this number, which covered different territory.
- Votes for listed candidates
- 136,611
- Election day
- November 8, 2022
- District map
- Older district map (2022 to 2023)
Michigan Senate District 13, 1970 to 2022, 2022, every candidate Candidate Party Votes and share Share DemocraticRosemary BayerWon(incumbent) Democratic 78,09857.2% RepublicanJason Rhines Republican 58,51342.8% - Votes for listed candidates
- 140,944
- Election day
- November 6, 2018
- District map
- Older district map (2014 to 2021)
Michigan Senate District 13, 1970 to 2022, 2018, every candidate Candidate Party Votes and share Share DemocraticMallory McMorrowWon Democratic 73,14651.9% RepublicanMarty Knollenberg(incumbent) Republican 67,79848.1% - Votes for listed candidates
- 102,462
- Election day
- November 4, 2014
- District map
- Older district map (2014 to 2021)
Michigan Senate District 13, 1970 to 2022, 2014, every candidate Candidate Party Votes and share Share RepublicanMarty KnollenbergWon Republican 59,57058.1% DemocraticCyndi Peltonen Democratic 42,89241.9% - Votes for listed candidates
- 105,154
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2013)
Michigan Senate District 13, 1970 to 2022, 2010, every candidate Candidate Party Votes and share Share RepublicanJohn PappageorgeWon(incumbent) Republican 62,32459.3% DemocraticAaron Bailey Democratic 42,83040.7% - Votes for listed candidates
- 116,817
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2013)
Michigan Senate District 13, 1970 to 2022, 2006, every candidate Candidate Party Votes and share Share RepublicanJohn PappageorgeWon Republican 57,20449.0% DemocraticAndy Levin Democratic 56,48448.4% GreenKyle McBee Green 3,1292.7% - Votes for listed candidates
- 101,015
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2013)
Michigan Senate District 13, 1970 to 2022, 2002, every candidate Candidate Party Votes and share Share RepublicanShirley JohnsonWon Republican 63,79363.1% DemocraticColleen Levitt Democratic 37,22236.9% - Votes for listed candidates
- 89,713
- Election day
- November 3, 1998
- District map
- Older district map (1994 to 2001)
Michigan Senate District 13, 1970 to 2022, 1998, every candidate Candidate Party Votes and share Share RepublicanMichael BouchardWon(incumbent) Republican 57,75264.4% DemocraticJeffrey Jenks Democratic 29,41132.8% LibertarianGary Atkinson Libertarian 2,5502.8% - Votes for listed candidates
- 90,858
- Election day
- November 8, 1994
- District map
- Older district map (1994 to 2001)
Michigan Senate District 13, 1970 to 2022, 1994, every candidate Candidate Party Votes and share Share RepublicanMichael BouchardWon Republican 59,84665.9% DemocraticRobert Boyd Democratic 28,87131.8% LibertarianHenry Freriks Libertarian 2,1412.4% - Votes for listed candidates
- 63,411
- Election day
- November 6, 1990
- District map
- Older district map (1982 to 1993)
Michigan Senate District 13, 1970 to 2022, 1990, every candidate Candidate Party Votes and share Share RepublicanJohn A. WelbornWon(incumbent) Republican 36,64157.8% DemocraticEdward Laforge Democratic 26,77042.2% - Votes for listed candidates
- 54,056
- Election day
- November 4, 1986
- District map
- Older district map (1982 to 1993)
Michigan Senate District 13, 1970 to 2022, 1986, every candidate Candidate Party Votes and share Share RepublicanJohn A. WelbornWon Republican 32,19559.6% DemocraticPaul Denenfeld Democratic 21,86140.4% - Votes for listed candidates
- 70,425
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1993)
Michigan Senate District 13, 1970 to 2022, 1982, every candidate Candidate Party Votes and share Share RepublicanRobert A. WelbornWon Republican 40,59057.6% DemocraticJohn A. Whitman Democratic 27,46439.0% LibertarianRichard Whitelock Libertarian 1,8102.6% OtherRobert Reames Other 5580.8% Scattered write-ins Write-in 30.0% - Votes for listed candidates
- 58,459
- Election day
- November 7, 1978
- District map
- Older district map (1974 to 1981)
Michigan Senate District 13, 1970 to 2022, 1978, every candidate Candidate Party Votes and share Share DemocraticWilliam FaustWon(incumbent) Democratic 45,06777.1% RepublicanColeman F. Flaskamp II Republican 13,39022.9% Scattered write-ins Write-in 20.0% - Votes for listed candidates
- 52,264
- Election day
- November 4, 1974
- District map
- Older district map (1974 to 1981)
Michigan Senate District 13, 1970 to 2022, 1974, every candidate Candidate Party Votes and share Share DemocraticWilliam FaustWon(incumbent) Democratic 39,45075.5% RepublicanJames D. Walaskay Republican 12,81424.5% - Votes for listed candidates
- 58,628
- Election day
- November 3, 1970
- District map
- Older district map (1964 to 1973)
Michigan Senate District 13, 1970 to 2022, 1970, every candidate Candidate Party Votes and share Share DemocraticWilliam FaustWon(incumbent) Democratic 44,63376.1% RepublicanAnthony A. Bielecki Jr. Republican 13,99523.9%
1970 to 2022: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), retrieved Oct 28, 2026. Compiled by Carl Klarner (Harvard Dataverse) from official returns; not an official source
Last contest in this district on file: 2022.
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Cite this page
Election Wrld. (2026). Michigan State Senate District 13, election results 1970 to 2022. https://www.electionwrld.com/mi/senate/13. Retrieved October 31, 2026.
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<iframe src="https://www.electionwrld.com/embed/mi/senate/13" title="Michigan Senate District 13" width="100%" height="400" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Data: <a href="https://www.electionwrld.com">Election Wrld</a>, CC BY 4.0</p>Sources
Sources: Census TIGERweb Legislative MapServer (120th CDs layer 0, 119th CDs layer 4, 2026 SLD upper layer 1 and lower layer 2) (US Census Bureau, public domain), retrieved Oct 28, 2026; Open Civic Data division identifiers (census_autogenerated us_sldl/us_sldu and openstates state files); also (sld-recent.json): Open Civic Data division identifiers (country-us) (CC0 (repository); also (sld-recent.json): CC0 1.0), retrieved Oct 28, 2026; Open States people (current) CSVs (CC0-1.0 (Open States people data)), retrieved Oct 28, 2026, compiled by Open States volunteers and staff (rosters from state legislature sites) from official returns, not an official source; State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse) (CC0 1.0), retrieved Oct 28, 2026, compiled by Carl Klarner (Harvard Dataverse) from official returns, not an official source.
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse)Data as of Oct 28, 2026