Proposition 64|
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| Choice | Votes | % |  
| Yes | 7,979,041 | 57.13% |  
| No | 5,987,020 | 42.87% |  
| Valid votes | 13,966,061 | 95.59% |  
| Invalid or blank votes | 644,448 | 4.41% |  
| Total votes | 14,610,509 | 100.00% |  
| Registered voters/turnout | 19,411,771 | 75.27% |  | 
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| For   50%–60%   60%–70%   70%–80% | Against   50%–60%   |  | 
| Source: California Secretary of State | 
The Adult Use of Marijuana Act (AUMA) (Proposition 64) was a 2016 voter initiative to legalize cannabis in California. The full name is the Control, Regulate and Tax Adult Use of Marijuana Act. The initiative passed with 57% voter approval and became law on November 9, 2016, leading to recreational cannabis sales in California by January 2018.