A radical plan to carve up California into six separate states has enough support to be put to a public vote, campaigners say.
A petition backing the proposal, which was originally conceived by Silicon Valley investor Tim Draper, has collected the 808,000 signatures necessary to be included on the election ballot in November 2016.
The non-profit "Six Californias" campaign announced via Twitter that it would submit the petition in the state capital, Sacramento, today.
California is the most populous state in the US, home to 38 million people.
Draper, the founder of venture capital firm Draper Fisher Jurvetson - known for its investments in Hotmail, Twitter, Tesla and Skype - claims the state is so large and diverse as to be "ungovernable". He has spent almost US$5 million ($5.7 million) of his own money to promote the idea.