1998Final results
1998 election for California Senate District 4
California State Senate · California
K. Maurice Johannessen (R) won with 56.7% of the vote, defeating Mark Desio (D) by 13.3 points.
K. Maurice JohannessenRepublican · winner · incumbent
56.7%135,528
Mark DesioDemocrat
43.3%103,620
239,148 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 1998
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET