Close-up view of a voting machine on November 6, 1928. The big handle closes a curtain about the machine booth, and the voter turns attention to the mechanical ballot board. He may vote a straight party ticket by turning one of the key levers shown by arrows at left. To vote for individuals, he turns the corresponding keys beneath their names. On propositions he may turn either a yes or a no key to register his vote. Parties on this ballot are: Prohibition, Republican, Democratic, and Socialist. The names are duplicated for Electors of President and Vice-President under both the Prohibition and Republican parties. Upton Sinclair is on the Socialist ballot.