1991Final resultsIncumbent defeated
1991 election for Louisiana Senate District 18
Louisiana State Senate · Louisiana
JOE SEVARIO led; no source recorded a winner.
Joe SevarioDemocrat · leading · incumbent
47.0%22,215
Jeffery DiezDemocrat
44.4%20,975
Michael J. MullerDemocrat
8.6%4,079
47,269 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1991
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET