That means Democrats dominate the Los Angeles and San Diego commissions and will do so in Fresno and Riverside counties as well.
Republicans have a slight voter registration edge in Kern County, however.
snip
Sponsors of the local bills said they were needed to prevent county supervisors from gerrymandering their own districts. But as constituted, the local commissions will be empowered to create gerrymanders of a different kind.
Commissions to redraw county supervisor districts in five counties are stacked in favor of a county's dominant political party
calmatters.org
the republicans do it anyway.