Amends provisions of Direct Primary Law of 1913 governing nominations at primary elections so as to permit declaration of party affiliation by elector at polls instead of when registering; prescribes official ballot containing names of all candidates; electors declaring at polls affiliation with party to vote for candidates of that party only and for present nonpartisan offices, while electors not so declaring to vote for nonpartisan offices only; requires election officer, before delivering ballot to elector, to cancel such portion thereof as elector is not entitled to vote.
Source for Popular Vote data: California Secretary of State. Statement of Vote at General Election held on November 7, 1916 in the State of California, California Secretary of State (https://archive.org/stream/statementofvo19081922cali#page/n202/mode/1up) (accessed 15 Sep 2016)