Population 2010

483,878

Population 2020

488,863

Registered Voters

261,706

Republicans

56,428

Democrat

134,896

Minor Party

7,268

No Party

6,619

Superintendent of Schools

Treasurer / Tax Collector

County Commission

District 1 Susan Gorin
District 2 David Rabbitt
District 3 Chris Coursey
District 4 James Gore
District 5 Lynda Hopkins

School Board

 
District 1  Gina Cuclis
District 2  Peter Kostas
District 3  Andrew Leonard
District 4 Lisa Wittke Schaffner
District 5  Herman G. Hernandez

Brief Political History

For most of the 20th century, Sonoma County was a Republican stronghold in presidential elections. From 1880 until 1988, the only Democrats to carry Sonoma were Winfield Scott Hancock in 1880, Grover Cleveland in 1888 and 1892, Woodrow Wilson in 1912, Franklin D. Roosevelt in 1932 and 1936, and Lyndon B. Johnson in 1964.[80] Like the rest of the Bay Area, it has since become a Democratic stronghold.

The last Republican to win a majority in the county was Ronald Reagan in 1984, and the last Republican to represent a significant part of the county in Congress was Representative Donald H. Clausen, who left office in January 1983.

On November 4, 2008, Sonoma County voted 66.4% against Proposition 8 which amended the California Constitution to ban same-sex marriages.

According to the California Secretary of State, as of February 2019, there are 277,665 registered voters in Sonoma County. Of those, 143,054 (51.5%) are registered Democratic, 49,386 (17.8%) are registered Republican, and 70,244 (25.3%) declined to state a political party. Every city, town, and the unincorporated areas of Sonoma County have more registered Democrats than Republicans.

 

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