The Democratic Central Committee is the local arm of the Democratic Party in Sonoma County.

The 2nd District is represented on the Board of Supervisors by Mike Kerns.

The 2nd district includes all of the cities of Petaluma and Cotati and a portion of Rohnert Park, as well as, the unincorporated communities of Penngrove, Two Rock, Bloomfield and Valley Ford. Much of the dairy industry is located in the 2nd district as well as a large portion of the San Pablo Bay frontage.