The Contra Costa County Elections Division handles all aspects of voting for Antioch residents, operating as part of the Contra Costa County Clerk-Recorder-Elections Department at 555 Escobar Street, Martinez, CA 94553 (phone: 925-335-7800, website: cocovote.us). This office administers federal, state, county, and municipal elections, managing everything from voter registration and ballot preparation to vote-by-mail processing, polling place coordination, and official results certification.
The Elections Division maintains a website at cocovote.us featuring voter information, election calendars, sample ballots, and results archives. Standard office hours run Monday through Friday from 8:00 AM to 5:00 PM, with extended availability before elections. Registering to vote is straightforward through the California Secretary of State's website at registertovote.ca.gov, which connects to the state's VoteCal system. California also offers same-day conditional voter registration at vote centers and county elections offices during the 14-day period before and including Election Day. Applicants must be U.S. Citizens, California residents, at least 18 years old by Election Day, and not currently serving a state prison sentence for a felony conviction. No identification is required to register, though first-time voters who register by mail may need to provide ID when voting. The voter registration deadline for most elections is 15 days before Election Day for online and mail registration. As a Vote-by-Mail state, California automatically sends mail ballots to all registered voters for every election, though in-person voting remains available. Municipal elections for the City of Antioch take place in November of even-numbered years, consolidated with statewide general elections. The city operates under a council-manager form of government with a directly elected Mayor serving a four-year term and four City Council members elected by district to four-year staggered terms. The next municipal election is November 4, 2026, when the Mayor's seat and two Council districts will appear on the ballot. Candidates for city office must file nomination papers with the City Clerk at Antioch City Hall (200 H Street, Antioch, CA 94531, phone: 925-779-7009) during the nomination period, which runs from July through August before the November election. Local ballot measures, including tax measures, bond issues, and charter amendments, may also appear on ballots and require City Council placement or citizen petition. Voters can locate their assigned vote center by using Contra Costa County's online lookup tool at cocovote.us or calling the Elections Division. Beginning in 2020, Contra Costa County transitioned to the Voter's Choice Act model, replacing traditional precinct polling places with fewer but larger Vote Centers that serve any county voter and remain open for multiple days before Election Day, typically 10 days, with extended hours. Official ballot drop boxes are located throughout the city and county, with locations listed on the Contra Costa County elections website. The Elections Division website provides an interactive map showing all vote centers and drop box locations. California law makes certain election records public. Voter registration lists containing names, addresses, and party affiliation but not birthdates or driver's license numbers are available to candidates, political committees, and journalists for election related purposes under Elections Code §2188. Campaign finance records, including contribution and expenditure reports for local candidates and ballot measure committees, are filed with the Antioch City Clerk for municipal races and are public records searchable online through the city's website and the California Fair Political Practices Commission (FPPC) at fppc.ca.gov for larger campaigns subject to state reporting. Candidate statements, nomination papers, and ballot arguments are also public records. Precinct-level election results are published by the Elections Division after each election and archived online at cocovote.us/results. In the November 2024 presidential election, Contra Costa County reported voter turnout of approximately 77-79% of registered voters, reflecting strong engagement typical of presidential election years in the Bay Area. Countywide, results leaned heavily Democratic, consistent with regional voting patterns. Antioch specifically tends to be more politically diverse than western Contra Costa cities, with competitive local races. Looking ahead to the November 3, 2026 general election, voters will decide several significant races. At the federal level, California's U.S. Senate seat currently held by Alex Padilla is not up for election in 2026, with the next election in 2028, but all California U.S. House seats will be contested, including the district representing Antioch, currently the 8th Congressional District. At the state level, all 80 California State Assembly seats and 20 of the 40 State Senate seats in even-numbered districts will be on the ballot. The city is represented in the State Assembly, currently District 14, and State Senate, currently District 3, both of which will have elections in 2026. California Governor Gavin Newsom's term expires in 2026, so the Governor's race will be on the November 2026 ballot, along with other statewide constitutional offices including Lieutenant Governor, Secretary of State, Attorney General, Insurance Commissioner, and others. At the Contra Costa County level, some Contra Costa County Board of Supervisors seats with staggered terms and countywide offices such as District Attorney, Sheriff-Coroner, Assessor, and Auditor-Controller may be on the ballot depending on term schedules. Local offices including the Mayor and two City Council seats will be decided. Ballot measures at state, county, and city levels are also likely. California voters can request vote-by-mail ballots, which are now automatically sent to all registered voters, or request replacement ballots by contacting the Elections Division by phone, online at cocovote.us, or in writing. Voted mail ballots must be postmarked by Election Day and received within 7 days after Election Day to be counted, or can be dropped in official drop boxes by 8:00 PM on Election Day. Voters can track their ballot status online through the state's Where's My Ballot system at wheresmyballot.sos.ca.gov.