Proponents of the CAL 3 initiative submitted more than 402,468 valid signatures as of Tuesday, making it eligible for the November 6 general election ballot, according to the California Secretary of State's office.
The new initiative will be certified by the California Secretary of State, Alex Padilla, on June 28 and will appear on the ballot in November. The "new" California would cover Los Angeles County and much of the coast below San Francisco Bay, the proposal said.
The proposal would make California the L.A. area, Northern California and Southern Cal would be the other two new states.
"Southern California" would include San Diego and most of the Central Valley.
Adding the initiative to the ballot would be the first step in a long process that would ultimately require approval from Congress.
California gets 55 electors in the Electoral College - a powerful number that has been a huge unmovable bloc for the Democratic candidate.
But opponents say creating three states will do nothing to solve California's economic and political problems.
Under the proposal, each state would have about one-third of the state population.
In 1992, Stan Statham, an assemblyman from Northern California, embarked on "a quixotic campaign to split California in three", as Sacramento's News & Review recalled.
"CAL 3" has no connection to efforts to have California secede from the United States. It received more than 402,468 valid signatures, more than the amount required by state law, thanks to an ambitious campaign, called Cal 3, and financial backing from the early investor in Tesla, Skype, and Hotmail.
Last year, an effort dubbed Calexit sought to bring the question of whether California should secede from the United States to this year's ballot.
"Three states will get us better infrastructure, better education and lower taxes", said Tim Draper, a technology mogul behind the measure.
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