LOS ANGELES—Fourteen years after California decided marijuana could be used as a medicine and ignited a national movement, the state is will vote on whether to take another step into the vanguard of drug liberalization: legalizing the controversial weed for fun and profit.
On Wednesday, the Secretary of sState's Office certified that the petitions seeking to place the question on the ballot had enough voter signatures to qualify.
That once again makes California the focal point of the long-stewing argument over marijuana legalization, a debate likely to be a high-dollar brawl between adversaries who believe it could launch or stifle another national trend.
The campaign will air issues that have changed little over the years. Proponents will cite the financial and social cost of enforcing pot prohibition and argue that marijuana is not as dangerous and addictive as tobacco or alcohol. Opponents will highlight marijuana-linked crimes, rising teenage use and the harm the weed causes some smokers.
But the debate also will play out against a cultural landscape that has changed substantially, with marijuana moving from dark street corners to neon-lit suburban boutiques. In the months since the Obama administration ordered drug agents to lay off dispensaries, hundreds have opened, putting pot within easy reach of most Californians. Whether voters view this de facto legalization with trepidation or equanimity could shape the outcome.
The measure's supporters hope that this dynamic will shift the debate, allowing them to persuade voters to replace prohibition with controlled sales that could be taxed to help California's cities and counties.
"They already accept that it's out there. They want to see a smart strategy," said Chris Lehane, a top strategist for the initiative.
But John Lovell, a Sacramento lobbyist for law enforcement groups, said he believes that voters will reject that argument.
"Why on Earth would you want to add yet another mind-altering substance to the legal array?" he asked.
California is not alone in weighing legalization. Several state legislatures have considered bills and two other Western states may vote on initiatives. In Nevada, a measure aimed for 2012 would allow state-licensed pot stores. And a campaign in Washington hopes to put a legalization measure on the fall ballot.
The 10-page California initiative would allow anyone 21 or older to possess, share and transport up to an ounce for personal use and to grow up to 25 square feet per residence or parcel. It would allow local governments, but not the state, to authorize the cultivation, transportation and sale of marijuana and to impose taxes to raise revenues.
The initiative's main proponent, Richard Lee, has spent at least $1.3 million, mostly on a professional signature-gathering effort, and has assembled a team of experienced campaign consultants that includes Lehane, a veteran of the Clinton White House.
Lee, who owns half a dozen mostly pot-related businesses in Oakland, has said that he hopes to raise as much as $20 million. The last time pot was on the ballot, in 1996, proponents raised $2 million, with most of it from a few wealthy supporters.
Lehane said the campaign would have a major Internet component. Marijuana has a devoted following on the Web. When President Obama held an online town hall meeting after his inauguration, he was barraged with questions about legalization.
"There's the potential to raise significant online resources," he said.
Lovell has been assembling a coalition to defeat the measure. He thinks that he will be able to recruit business leaders because the initiative prohibits discrimination against anyone who uses marijuana, unless it affects job performance.
Lovell said he is not worried about "the deep pockets on that side." He noted that opponents of Proposition 5, which would have let nonviolent drug offenders avoid prison, defeated it in 2008 despite being outspent.