2018 Orange County Board of Supervisors election

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Orange County Board of Supervisors elections, 2018
3 of 5 seats to the Orange County Board of Supervisors
Republican 60–70% 100% Winners Republican hold Democratic gain No election	Democratic 50–60%

Last updated February 21, 2025

The 2018 Orange County Board of Supervisors elections took place on June 5, 2018, as part of the primary election on June 5, 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.

Summary of results

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.

Summary of results by county supervisorial district

For districts not displayed, there would be no election until 2020.

Board of Supervisors District	Incumbent		Elected Supervisor
2nd ^[1]	Michelle Steel	Republican	Michelle Steel	Republican
4th ^[2]	Shawn Nelson	Republican	Doug Chaffee	Democratic
5th ^[3]	Lisa Bartlett	Republican	Lisa Bartlett	Republican

Close races

Seats where the margin of victory was under 5%:

County Supervisorial district 4, 0.8%

District 2

2018 Orange County Board of Supervisors District 2 election

← 2011

June 5 and November 6, 2018

2021 (Special) →


Candidate	Michelle Steel	Brendon Perkins	Michael Mahony
First round	80,854 63.4%	31,387 24.6%	15,281 12.0%

Supervisor before election

Michelle Steel

Elected Supervisor

Michelle Steel

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.

General election

Candidates

Michael Mahony (Libertarian)
Brendon Perkins (Democratic)
Michelle Steel (Republican)

Endorsements

Michelle Steel

U.S. representatives

Ken Calvert, U.S. representative from California (R-CA-42)
Paul Cook U.S. representative (R-CA-8)
Darrell Issa, U.S. representative from California (R-CA-49)
Dana Rohrabacher, U.S. representative from California (R-CA-48)
Ed Royce, U.S. representative from California (R-CA-39)

^[4]

Brendon Perkins

Organizations

Community Action fund of Planned Parenthood
Democratic Party of Orange County
Orange County Labor Federation

^[5]

Results

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

2018 Orange County Board of Supervisors District 4 election

← 2011

June 5 and November 6, 2018

2022 →


Candidate	Doug Chaffee	Tim Shaw	Joe Kerr
First round	18,093 20.5	31,387 24.6%	17,717 20.1%
Runoff	76,859 50.4	75,537 49.6	Eliminated


Candidate	Lucille Kring	Rose Espinoza	Cynthia Aguirre
First round	15,347 17.4%	10,397 11.8%	8,419 9.6%
Runoff	Eliminated	Eliminated	Eliminated

Supervisor before election

Shawn Nelson

Elected Supervisor

Doug Chaffee

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]