Proposition 203 to legalize medical marijuana in Arizona was narrowly approved by voters, CNN reports. State election officials said the ballot measure won with support from 50.1 percent of voters, a margin of about 4,300 votes. The proposition establishes about 120 state-regulated clinics to dispense marijuana. People living more than 25 miles from a clinic will be allowed to grow their own marijuana. Medical marijuana also was on the November 2 ballot in Oregon, where a measure to expand its use was defeated, and in South Dakota, where a measure to legalize its use was defeated.

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