The Constitution Party is not a ballot-qualified party in California. Nevertheless, the June 2018 Voters Guide (which is mailed to all registered voters by the Secretary of State) will mention the Constitution Party indirectly. Don Grundmann, a registered member of the Constitution Party, is on the ballot for U.S. Senate. Although his ballot label will be “party preference: none”, his paid statement in the Voters Guide will say that he is the state chairman of the Constitution Party.
As far as is known, this is the first time the name of an unqualified party has been mentioned in the California Voters Guide. Only statewide candidates can have paid statements in the Guide. Candidates for legislature and U.S. House cannot have such statements.
The Socialist Workers Party had a candidate on the California primary ballot in 2016, Eleanor Garcia. However she did not have a paid statement in the Voters Guide.