Louisiana State Senate District 21
Next vote Sat, Oct 9, 2027 · Represented by Robert Allain Republican · Member list as of Oct 28
We don’t have the candidate list for this race. See the official list at the Louisiana Secretary of State, Elections
- Last election
- Robert Allain (Republican) won by 18.0 points, 2023
More about this seat
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- Republican
- Independent
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- More than one party
- No member listed
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Official results for Louisiana
History (17 elections for this seat)
- Votes for listed candidates
- 16,719
- Election day
- November 18, 2023
- Type
- Runoff
- District map
- Same as today
Louisiana Senate District 21, 1968 to 2023, 2023, every candidate Candidate Party Votes and share Share RepublicanRobert AllainWon Republican 9,86459.0% RepublicanHenry "Bo" LaGrange Republican 6,85541.0% - Votes for listed candidates
- 24,698
- Election day
- October 14, 2023
- Outcome
- No majority; went to a runoff on November 18, 2023, won by Robert Allain
- District map
- Same as today
Louisiana Senate District 21, 1968 to 2023, 2023, every candidate Candidate Party Votes and share Share RepublicanRobert Allain Republican 10,81543.8% RepublicanHenry "Bo" LaGrange Republican 7,74531.4% RepublicanStephen Swiber Republican 6,13824.9% - Election day
- October 12, 2019
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 2019, every candidate Candidate Party Votes and share Share RepublicanRobert AllainWon(incumbent)Name as filed: R. L. Allain II Republican —— - Election day
- October 24, 2015
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 2015, every candidate Candidate Party Votes and share Share RepublicanR. L. Allain IIWon(incumbent) Republican —— - Votes for listed candidates
- 28,464
- Election day
- October 22, 2011
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 2011, every candidate Candidate Party Votes and share Share RepublicanR. L. Allain IIWon Republican 14,61851.4% RepublicanDarrin Guidry Republican 13,84648.6% - Votes for listed candidates
- 35,720
- Election day
- October 20, 2007
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 2007, every candidate Candidate Party Votes and share Share DemocraticButch GautreauxWon(incumbent) Democratic 25,34871.0% RepublicanClayton D. Diaz Republican 10,37229.0% - Votes for listed candidates
- 36,186
- Election day
- October 4, 2003
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 2003, every candidate Candidate Party Votes and share Share DemocraticD. A. GautreauxWon(incumbent) Democratic 31,93688.3% DemocraticEddie Albares Democratic 4,25011.7% - Votes for listed candidates
- 35,256
- Election day
- October 23, 1999
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 1999, every candidate Candidate Party Votes and share Share DemocraticD. A. GautreauxWon Democratic 21,00559.6% DemocraticMike Domino Democratic 11,75633.3% DemocraticGeorge E. Adams Democratic 2,4957.1% - Votes for listed candidates
- 36,896
- Election day
- October 21, 1995
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 1995, every candidate Candidate Party Votes and share Share DemocraticJohn SiracusaWon Democratic 19,18752.0% RepublicanJohnny Johnson Republican 17,70948.0% - Votes for listed candidates
- 36,068
- Election day
- October 19, 1991
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 1991, every candidate Candidate Party Votes and share Share DemocraticM. J. FosterWon(incumbent) Democratic 30,83685.5% DemocraticEddie Albares Democratic 5,23214.5% - Votes for listed candidates
- 37,782
- Election day
- October 24, 1987
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 1987, every candidate Candidate Party Votes and share Share DemocraticM. J. FosterWon Democratic 24,18364.0% DemocraticAnthony J. Guarisco Jr.(incumbent) Democratic 13,59936.0% - Votes for listed candidates
- 36,221
- Election day
- October 22, 1983
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 1983, every candidate Candidate Party Votes and share Share DemocraticAnthony J. Guarisco Jr.Won(incumbent) Democratic 21,44859.2% DemocraticJohn L. Haydel Democratic 14,77340.8% - Election day
- October 27, 1979
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 1979, every candidate Candidate Party Votes and share Share DemocraticAnthony J. Guarisco Jr.Won(incumbent) Democratic —— - Votes for listed candidates
- 22,769
- Election day
- December 13, 1975
- Type
- Runoff
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 1975, every candidate Candidate Party Votes and share Share DemocraticAnthony J. Guarisco Jr.Won Democratic 12,05452.9% DemocraticElward T. Brady Democratic 10,71547.1% - Votes for listed candidates
- 28,074
- Election day
- November 1, 1975
- Outcome
- No majority; went to a runoff on December 13, 1975, won by Anthony J. Guarisco Jr.
- Seats
- 2
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 1975, every candidate Candidate Party Votes and share Share DemocraticAnthony J. Guarisco Jr. Democratic 11,62841.4% DemocraticElward T. Brady Democratic 10,84238.6% DemocraticEmanuel J. Grizzaffi Democratic 4,03314.4% DemocraticLee C. Firmin Democratic 1,5715.6% - Votes for listed candidates
- 18,716
- Election day
- February 1, 1972
- District map
- Older district map (1972 to 2022)
Louisiana Senate District 21, 1968 to 2023, 1972, every candidate Candidate Party Votes and share Share DemocraticCarl W. BauerWon Democratic 18,716100.0% - Votes for listed candidates
- 26,579
- Election day
- February 6, 1968
- Seats
- 2
- District map
- Older district map (1968 to 1971)
Louisiana Senate District 21, 1968 to 2023, 1968, every candidate Candidate Party Votes and share Share DemocraticWilliam J. GusteWon(incumbent) Democratic 13,57151.1% DemocraticCharles G. SmitherWon(incumbent) Democratic 13,00848.9%
- 2023: Louisiana Secretary of State election results Excel, 2023-10-14 and 2023-11-18, retrieved Oct 28, 2026
- 1968 to 2019: 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: 2023.
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Cite this page
Election Wrld. (2026). Louisiana State Senate District 21, election results 1968 to 2023. https://www.electionwrld.com/la/senate/21. Retrieved October 30, 2026.
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<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; Louisiana Secretary of State election results Excel, 2023-10-14 and 2023-11-18 (US state public record), retrieved Oct 28, 2026; 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.
District id: ocd-division/country:us/state:la/sldu:21
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), Louisiana Secretary of State election results Excel, 2023-10-14 and 2023-11-18Data as of Oct 28, 2026