County election in California, U.S.
Orange County Board of Supervisors elections, 2018 
 
 
Majority party
 
Minority party
 
Third party
  
 
 
 
 
  
Party
 
Republican 
Democratic 
Libertarian 
 
Last election
 
5 
0
 
0
  
Seats before
 
5 
0
 
0
  
Seats won
 
2 
1
 
0
  
Seats after
 
4 
1
 
0
  
Seat change
 
 
Popular vote
 
270,980 
108,246
 
15,281
  
Percentage
 
68.7% 
27.4%
 
3.9%
  
 Winners Vote share 
Republican 
   60–70%
   100%
Winners 
   Republican hold
   Democratic gain
   No election
 
Democratic 
   50–60%
 
  
 
The 2018 Orange County Board of Supervisors elections  were held on June 5, 2018, and November 6, 2018. Three of the five seats of the Orange County, California  Board of Supervisors  were up for election.
County elections in California  are officially nonpartisan. A two-round system  was used for the election, starting with the first round in June, followed by a runoff in November between the top two candidates in each district. Runoffs are only held if no candidate receives a majority in each district.
Note: All elections for the Orange County Board of Supervisors are officially nonpartisan. The parties below identify which party label each candidate would have run under if given the option. Candidates all appear on the ballot as nonpartisan . For districts not displayed, there would be no election until 2020. Seats where the margin of victory was under 5%:
County Supervisorial district 4, 0.8% 2018 Orange County Board of Supervisors District 2 election 
 
 
 
Candidate
 
Michelle Steel Brendon Perkins
 
Michael Mahony
  
First round
 
80,854 
31,387 
15,281  
 
District 2 consists of coastal Orange County, including Huntington Beach , Costa Mesa , Cypress , La Palma , Los Alamitos , Newport Beach , Seal Beach , most of Fountain Valley , and neighborhoods in southern Buena Park .
Michael Mahony (Libertarian) 
Brendon Perkins (Democratic) 
Michelle Steel  (Republican)2018 Orange County's 2nd supervisorial district general election results by congressional district   
Orange County Board of Supervisors 2nd district, 2018[ 6]  
Candidate
 
Votes
 
%
  
Michelle Steel  (incumbent)
80,854
 
63.4
  
Brendon Perkins
 
31,387
 
24.6
  
Michael Mahony
 
15,281
 
12.0
  
Total votes
 
127,522  
100.0  
 
District 4 consists of inland northwestern Orange County, taking in Fullerton , La Habra , Placentia , Brea , western Anaheim , and most of Buena Park . Incumbent Shawn Nelson retired to run for California's 39th congressional district .[ 7] 
Cynthia Aguirre (Democratic) 
Doug Chaffee  (Democratic)Rose Espinoza (Democratic) 
Joe Kerr (Democratic) 
Lucille Kring (Republican) 
Tim Shaw (Republican) Tim Shaw
U.S. representatives 
Ed Royce , U.S. representative from California (R-CA-39)[ 8] 
 2018 Orange County's 4th supervisorial district general election initial round results by congressional district      Shaw—50–60%
    Chaffee—<30%
    Kring—<30%
    
Orange County Board of Supervisors 4th district, 2018[ 6]  
Candidate
 
Votes
 
%
  
Tim Shaw
 
18,171
 
20.6
  
Doug Chaffee 
18,093
 
20.5
  
Joe Kerr
 
17,717
 
20.1
  
Lucille Kring
 
15,347
 
17.4
  
Rose Espinoza
 
10,397
 
11.8
  
Cynthia Aguirre
 
8,419
 
9.6
  
Total votes
 
88,141  
100.0  
 
2018 Orange County's 4th supervisorial district general election runoff results by congressional district      Chaffee—60–70%
    Chaffee—50–60%
    Shaw—50–60%
    
Orange County Board of Supervisors 4th district runoff, 2018[ 9]  
Candidate
 
Votes
 
%
  
Doug Chaffee 
76,859
 
50.4
  
Tim Shaw
 
75,537
 
49.6
  
Total votes
 
152,396  
100.0  
 
2018 Orange County Board of Supervisors District 5 election 
 
District 5 encompasses southern Orange County, including Aliso Viejo , Laguna Hills , Laguna Niguel , Laguna Woods , Lake Forest , Mission Viejo , Rancho Santa Margarita , San Juan Capistrano , Laguna Beach , San Clemente , and Dana Point .
2018 Orange County's 5th supervisorial district general election results by congressional district   
Orange County Board of Supervisors 5th district, 2018[ 6]  
Candidate
 
Votes
 
%
  
Lisa Bartlett  (incumbent)
113,567
 
100.0
  
Total votes
 
113,567  
100.0  
 
Official campaign websites of second district candidates 
Official campaign websites of fourth district candidates 
Official campaign websites of fifth district candidates 
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