Missouri Issue 4, Signatures Required on Initiative Petitions (1940)
Missouri Signatures Required on Initiative Petitions or Issue 4 was a measure amending Art. IV of the Constitution to provide that the required number of signatures in initiative or referendum petitions be based on the vote for governor in the most recent gubernatorial election . It failed.
- List of Missouri initiatives from 1910-2000 (PDF)
- Missouri Legislative Academy - Initiative and Referendum 1910-2010