Sonoma County Measure O would impose a special sales tax — an additional .25 percent — to fund a wide range of local mental health services.

Sonoma Measure P: Expanding County Sheriff's Oversight

Here's a quick guide to your Bay Area ballot, covering all statewide propositions and county measures in digestible 2-minute summaries.This election season, we're focusing on areas with historically low-voter turnout. Residents of these neighborhoods — East Palo Alto, Fairfield, Richmond, West Oakland, and San Francisco's Bayview-Hunter’s Point — can find every measure on your ballot by clicking on your city below:East Palo Alto | Fairfield | Oakland | Richmond | San FranciscoYou can also see measures listed by county:Alameda | Contra Costa | San Francisco | San Mateo | Santa Clara | Solano | SonomaYou can find every California proposition here.