Editing San Mateo County, California (section)

=== Overview ===
The California Secretary of State, as of February 2019, reports that San Mateo County has 404,958 registered voters.<ref>{{Cite web |title=Report of Registration as of February 10, 2019 Registration by Political Subdivision by County |url=https://elections.cdn.sos.ca.gov/ror/ror-odd-year-2019/politicalsub.pdf |website=elections.cdn.sos.ca.gov}}</ref> Of those voters, 202,341 (50%) are registered Democratic, 60,045 (14.3%) are registered Republican, 15,834 (3.9%) are registered with other political parties, and 126,738 (31.3%) [[declined to state]] a political party preference. Every city, town, and unincorporated area of San Mateo County has more registered Democrats than Republicans.

On November 4, 2008, San Mateo County voted 61.8% against [[2008 California Proposition 8|Proposition 8]], which amended the California Constitution to ban same-sex marriages.<ref>{{cite web
 |url          = http://www.sos.ca.gov/elections/sov/2008_general/57_65_ballot_measures.pdf
 |author       = California Secretary of State
 |title        = State Ballot Measures (Proposition Numbers 1A-12) by County
 |access-date   = June 14, 2009
|archive-url  = https://web.archive.org/web/20090612235853/http://www.sos.ca.gov/elections/sov/2008_general/57_65_ballot_measures.pdf
 |archive-date = June 12, 2009
|url-status     = dead
 |df           = dmy-all
}}</ref>