The television and radio personality is an advocate on a national level for the use of medical marijuana. He uses medical marijuana as one of several treatments to help control symptoms of multiple sclerosis, which he was diagnosed with back in 1999.
The former U.S. Marine, talk show host and best-selling author revealed his support for Issue 3 after much speculation, since he has never publicly supported the recreational use of marijuana.
Williams says he is concerned that the new law would create a monopoly for a designated seller, which is why he announced his opposition to Issue 2.
"This didn't come without some reflection on my part - and I'm confident I made [the] right call on this," Williams said on Twitter.
This is the first time Williams has become involved in a legalization effort.