Your guide to California’s Assembly 4th District primary race
Cecilia Aguiar-Curry, the Assembly majority leader, is unopposed as she seeks her final term representing a largely agrarian Northern California district.
The lack of an opponent means Aguiar-Curry, who first won election in 2016, can continue to focus on passing policies and building her standing in Sacramento, where she has risen in the Democratic caucus to become a powerful figure who brings that stature to the agricultural and rural issues that impact her district.
This year, Aguiar-Curry has placed herself in the center of debates about how California lawmakers can respond to cuts from the Republican-led federal government that are hitting popular social safety programs in the state such as CalFresh, the food aid program, and child welfare funding. She is also pushing a yearslong effort to strengthen California’s antitrust laws against modern forms of business monopolies.
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Where is the district?
California’s 4th Assembly District covers Napa, Lake, Colusa and Yolo counties as well as a slice of Sonoma County that includes the city of Sonoma. On the southern edge it includes American Canyon but does not extend south to capture Vallejo. It is a varied district politically, with more conservative locally-elected leadership in Lake County but a significant Democrat voter base in the Napa Valley.
Around 48% of registered voters are Democrats, according to the California secretary of state’s December 2025 statistics, and 23% are Republicans.
Who is Aguiar-Curry?
Aguiar-Curry was born and raised in Yolo County and moved home after working for a stint in the Bay Area and starting a consulting company. She entered public life and in 2012 became the first female mayor of Winters, a small farming town on the western side of the Sacramento Valley.
Who is funding her campaign coffer?
Just because Aguiar-Curry isn’t in a competitive race doesn’t mean she’s not raising money. Her position in the Assembly makes her an attractive target for campaign donors, and though she does not appear to be a prolific fundraiser she has built up a campaign chest she can use to fundraise further and support allies in the Legislature in their own campaigns. At the beginning of 2026, she had more than $470,000 in a campaign finance account for her Assembly district.
Labor unions, tribal governments and political action committees for a wide range of industries, from telecommunications to technology companies to medical associations, have all contributed to Aguiar-Curry’s campaign.
This story was originally published April 10, 2026 at 7:00 AM.
