Assembly District 30 stretches along one of California's most storied coastlines, covering portions of San Luis Obispo, Monterey, and Santa Cruz Counties. The district includes the cities of San Luis Obispo, Morro Bay, Atascadero, Paso Robles, Arroyo Grande, Pismo Beach, and Grover Beach in the south, running north through Monterey, Pacific Grove, Carmel-by-the-Sea, Seaside, Marina, and Capitola, along with Sand City, Del Rey Oaks, and a zero-population split of Watsonville.

The district is anchored in San Luis Obispo County, which accounts for more than half its registered voters, and stretches up the coast through Monterey County and into Santa Cruz County. Its communities share a tourism-driven economy, a strong environmental ethic, and deep ties to higher education, including California State University Monterey Bay and the Monterey Institute of International Studies.

The Central Coast has long drawn visitors for its dramatic scenery, from the rocky shores of Carmel-by-the-Sea and the landmark Morro Rock in Morro Bay to the wine country of Paso Robles and the beach towns of the San Luis Obispo coast. It is a region where the economy runs on hospitality, agriculture, and education, and where concerns about housing affordability, water supply, and coastal preservation dominate local politics.

Demographics, Housing, and Cost of Living

According to the 2023 American Community Survey, Assembly District 30 has a total population of 475,439. The district is 63.4% White and 23.9% Latino, with Asian residents comprising 4.9% and Black residents 1.6%. The citizen voting age population stands at 76.9%, with 12.5% of residents foreign-born and 6.0% classified as non-citizens.

The district is relatively affluent by California standards. The median household income is $97,987, with a mean household income of $138,457 and a per capita income of $55,467. Educational attainment is high, with 43.9% of residents holding a bachelor's degree and 18.3% holding a graduate degree. About 11.8% of residents live below the poverty line, 5.8% lack health insurance, and 6.7% of households receive food assistance.

Housing costs reflect the desirability of the coastal location. Owner-occupied homes account for 58.1% of the housing stock, while 41.9% of residents rent. The median home value is $872,900, among the highest in the state, and the median monthly rent is $2,076. The district is home to approximately 25,130 civilian veterans.

Registration Trends: A Comfortable and Growing Democratic Advantage

As of December 30, 2025, Assembly District 30 had 307,638 registered voters. Democrats hold 45.2% of registrations, Republicans 27.5%, and No Party Preference voters 19.2%, with the remainder distributed among minor parties, including American Independent at 4.7% and Libertarian at 1.3%. Democrats hold a registration advantage of 17.8 points.

The trajectory of that advantage tells a story of steady Democratic consolidation. In 2008, the Democratic edge stood at just under 8 points. It widened gradually during the Obama years and expanded sharply during the Trump era, reaching a peak of 18.75 points in 2022 before settling at roughly 17.8 points. Republican registration has fallen from 33.8% in 2008 to 27.5% today, while the Democratic share has climbed from 41.7% to 45.2%.

No Party Preference voters have grown as a share of the electorate as well, rising from 18.9% in 2008 to a high of 25% in 2018 before pulling back to 19.2% today. The NPP share is notably lower here than in many competitive California districts, reflecting a more settled partisan composition. That said, with nearly one in five voters holding no party affiliation, NPP voters remain a meaningful presence in any primary contest.

The district's three counties carry very different partisan profiles. San Luis Obispo County accounts for 53.6% of registered voters and leans Democratic by just 3.5 points, making it the swing center of the district. Monterey County, at 29% of registrations, leans Democratic by 26.2 points. Santa Cruz County, the smallest slice at 17.4%, is the most heavily Democratic of the three, with a 42.5-point advantage.

Past Election Results: Consistent Democratic Strength

Assembly District 30 has delivered consistent and often lopsided Democratic margins at the top of the ticket. Barack Obama carried the district by 24.3% in 2008 and by 19.9% in 2012. Hillary Clinton won it by 25.7% in 2016, Joe Biden by 30.1% in 2020, and Kamala Harris by 27.1% in 2024. Gavin Newsom carried the district by 20.6% in both 2018 and 2022. In the 2024 U.S. Senate race, Adam Schiff won by 23 points over Republican Steve Garvey.

The 2024 ballot measure results offer some nuance. While the district backed most Democratic-leaning measures, voters rejected Proposition 32, which would have raised the minimum wage, by a narrow 3.2-point margin. They did support Proposition 36, which increased sentencing for certain drug and theft crimes, by a wide 23.7-point margin, reflecting a cross-partisan concern about public safety that cuts across the district's otherwise solidly blue lean.

At the Assembly level, Addis won her 2024 re-election race by a commanding 62.4% to 37.6% margin over Republican Dalila Epperson, a broadcast journalist and former congressional primary candidate. Her strongest performance came in Santa Cruz County, where she won 76.3%, while San Luis Obispo County, as expected, was her most competitive county at 55.1%.

The 2026 Race

Assembly District 30 is not among California's most contested races in 2026. Addis enters the cycle as a well-funded incumbent in a district that has trended steadily toward her party for nearly two decades.

One Republican has filed to challenge her: Shannon Kessler, a realtor and parents' rights activist from Arroyo Grande. A second Democrat, Susannah Brown of San Luis Obispo County, has also filed, though she reported no fundraising activity as of the end of 2025.

Addis closed 2025 with $528,912 on hand after raising $168,479 in the most recent period. Kessler has raised $144,294 to date and ended the year with $108,803 on hand. Addis has received both the California Democratic Party's pre-endorsement conference endorsement and the party's official primary endorsement.

The Candidates

Dawn Addis (Democrat, Incumbent)

Dawn Addis, born July 12, 1972, is a former teacher and Morro Bay city councilmember who was first elected to the Assembly in 2022 and re-elected in 2024. Her path to Sacramento was not direct. She ran for the same seat in 2020, losing by double digits to Republican incumbent Jordan Cunningham in what was then a more competitive district. She did not give up, winning a council seat in Morro Bay in 2018 and running again after redistricting shifted the district's lines in her favor.

Raised in Mill Valley, Addis graduated from Tamalpais High School, studied at Humboldt State, and went on to earn a bachelor's degree in Spanish and art education from San Francisco State University in 2000, a teaching credential in 2001, and a master's in special education teaching in 2006. After relocating to Morro Bay with her husband and children in 2001, she spent years teaching in the San Luis Coastal Unified School District at Morro Elementary, Pacific Beach, San Luis Obispo High School, Pacheco Elementary, and Laguna Middle School, working as a Teacher on Special Assignment as an English learner intervention specialist. She is an executive board member of the San Luis Coastal Teachers Association.

Her civic engagement predates her electoral career. Following the 2016 election, she co-founded the San Luis Obispo Women's March, which drew a crowd of 10,000 people in 2017, and went on to support the student-led March for Our Lives in 2018 and a march against the Trump Administration's immigration detention policies that same year. She also served on the Morro Bay Citizens' Finance Advisory Committee in 2017.

In the Assembly, Addis serves on the Budget, Health, Business and Professions, and Insurance Committees, and chairs the Budget Subcommittee No. 1 on Health, which oversees eight state departments and a budget of $175 billion. She also chairs the Select Committee on Serving Students with Disabilities and serves as the Assembly's appointee to the Ocean Protection Council. She is the founding chair of the California Legislative Central Coast Caucus and president of the California Legislative Central Coast Caucus Foundation.

Addis carries several historic distinctions. She is the first Democrat from San Luis Obispo County to serve in the State Assembly since 1922, the first Democratic woman ever to hold the seat, and the first Democrat to represent the majority of San Luis Obispo County in the Assembly since 1947.

Her voting record reflects her district's lean. She has received perfect scores from the ACLU, the Alliance for Retired Americans, the California Labor Federation, the California League of Conservation Voters, Equality California, Planned Parenthood of California, the Sierra Club California, and UFCW. The California Chamber of Commerce gave her a 0% rating in 2023, and the National Rifle Association gave her a 0% rating in 2024.

Also in 2026, Addis is carrying Assembly Bill 1159, a high-profile student data privacy bill that would close loopholes in California's 2014 education privacy law, restrict how AI companies use student data, and create new protections for college students, including a right to sue tech companies for certain privacy violations. The bill has drawn support from the California Labor Federation and opposition from the California Chamber of Commerce and TechNet, a trade association representing major technology companies. 

She has also introduced Assembly Bill 2034, which would require food and chemical companies to submit evidence to the California Department of Public Health demonstrating the safety of food additives that have not undergone federal pre-market review, targeting a longstanding loophole that allows companies to self-certify ingredients as generally recognized as safe without informing the FDA. The bill would also require public disclosure of ingredients currently hidden behind vague labels such as "artificial flavor" or "natural flavor." "Californians deserve clear, honest information about what they're putting in their bodies," Addis said. "For far too long, companies have exploited vague labeling and federal loopholes to conceal dangerous chemicals in the foods that families trust."

In early 2026, Addis also co-authored Assembly Bill 1744, which would prohibit sunscreen products from being labeled as "reef safe" or similar terms when they contain chemicals harmful to marine ecosystems. The bill advanced unanimously through the Assembly Environmental Safety and Toxic Materials Committee in March 2026. "One of the major problems is that certain chemicals that are commonly found in sunscreen are of particular concern, because when you get in the water, they wash off your body and into the ocean," Addis said during the hearing. The legislation reflects both her environmental priorities and the economic stakes for her district, where coastal tourism generates roughly $51 billion annually for the state. 

In her role as chair of the Budget Subcommittee on Health, Addis has also focused on the Central Coast's doctor shortage, convening a hearing in 2026 on how federal budget cuts could worsen access to physicians in medically underserved areas. "I've heard from people almost daily that they would like to see a doctor. They have insurance," she said. "They go to make an appointment, and they simply can't get an appointment because there's just not enough doctors in the system."

Addis and her husband, Marcus, reside in Morro Bay. They have two sons.

Shannon Kessler (Republican)

Shannon Kessler, born September 21, 1968, is a realtor, Harvest Church ministry director, parents' rights activist, and member of the San Luis Obispo County Republican Central Committee. A sixth-generation Californian, she began her career in real estate as a sales associate for Prudential California Realty in 2003, obtained her realtor's license in 2004, and worked as a Century 21 realtor from 2005 until 2023, when she became the principal broker at Shannon Kessler Real Estate. She and her husband Jim co-own a family construction company as well.

Kessler's civic involvement includes serving as an Arroyo Grande Parks and Recreation Commissioner, PTA president, and coordinator of a local walking club. She is also the founder of Culture Impact, an organization that encourages citizen engagement and civic volunteerism, and of Save Girls' Sports Central Coast, a group advocating for the protection of female-only athletic competition.

She is positioning herself as a practical outsider alternative to career politicians, running on themes of public safety, affordability, and parental involvement in schools. "I am not a career politician," she has said. "I am a mother, business owner, and community member ready to serve. This campaign isn't about party labels — it's about restoring common sense and protecting the future of our community." She has said she entered the race because "public safety, affordability, and accountability are no longer being treated as priorities" and that "families are struggling to stay in the communities they love."

Her platform centers on reducing retail theft and holding repeat offenders accountable, reforming homelessness programs to focus on treatment and measurable outcomes, cutting regulatory burdens on small businesses, and lowering the cost of living for working families and seniors. 

On education, she has emphasized parental involvement and student safety. 

On energy and the environment, she has called for opposing offshore drilling while also pushing for more affordable and reliable power, arguing that rising utility costs are straining Central Coast families. Notably for a Republican, she has also staked out support for protecting the coastline and responsible land stewardship, themes that resonate across party lines in a district defined by its natural beauty.

Kessler has received the endorsement of the California Republican Party. "Shannon's common-sense solutions and vision for California will be a refreshing addition to Sacramento," said California Republican Party Chairwoman Corrin Rankin in February 2026. She has also been endorsed by former San Luis Obispo County Supervisors Lynn Compton and Debbie Arnold.

She has raised $144,294 to date and ended 2025 with $108,803 on hand, a notable fundraising start for a Republican challenging a well-funded incumbent in a heavily Democratic coastal district.

Kessler and her husband, Jim, are the parents of adult children and reside in Arroyo Grande. The couple enjoys surfing and hiking with their family on the Central Coast.

Susannah Brown (Democrat)

Susannah Brown is a San Luis Obispo County Democrat who filed to run in the AD30 race in January 2026. She reported no fundraising activity as of the end of 2025. Additional biographical information is forthcoming.

The Role of Independent Voters in AD30

With nearly 59,200 voters registered with No Party Preference, roughly one in five voters in Assembly District 30 belongs to no party. While the NPP share here, at 19.2%, is lower than in many of California's more competitive districts, it has grown considerably over time, rising from 18.9% in 2008 to a peak of 25% in 2018 before settling back to its current level. In raw numbers, that represents tens of thousands of voters who have declined to align with either major party in a district that has otherwise trended steadily toward Democrats.

The county-by-county breakdown adds nuance. San Luis Obispo County, the district's largest and most politically competitive slice, holds a Democratic registration edge of just 3.5 points. In that environment, NPP voters carry considerably more weight than the district-wide numbers suggest. A candidate able to make a compelling case to unaffiliated voters in San Luis Obispo County, whether in a contested primary or a general election, holds a meaningful advantage.

The presence of a second Democrat on the ballot in 2026 also means the June primary will draw additional attention to how NPP voters distribute their support across candidates of the same party, a dynamic that can shape which candidates advance to November under California's top-two system.

About the 2026 California Top Two Primary

The last day to register to vote for the June 2, 2026, Primary Election is May 18, 2026. All active registered voters will receive a vote-by-mail ballot. Ballots will begin mailing on May 4, and drop-off locations will open on May 5. Early in-person voting begins May 23 in Voter's Choice Act counties. Vote-by-mail ballots must be postmarked by Election Day and received by June 9.

This article draws on publicly available information from the California Secretary of State, the California Target Book, California FPPC campaign finance filings, the U.S. Census Bureau's American Community Survey, Ballotpedia, and other local and regional reporting.