1978Final results
1978 Republican primary for Florida Senate District 18
Florida State Senate · Florida
Mary R. Grizzle (R) won with 61.4% of the vote, defeating Dennis McDonald (R) by 22.8 points.
Mary R. GrizzleRepublican · winner
61.4%35,080
Dennis McDonaldRepublican
38.6%22,038
57,118 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET