an initiative to split California into 6 states has garnered more than 807,000 signatures, and is now going to be on the ballot for November 2016. I don't think it will pass (people generally don't like radical change), but if it does there may be six new states (Congress would probably have to approve that though).
According to Forbes Columnist Travis Brown " the initiative would achieve the triumvirate goal of proportionately distributing California’s debts based on population, ending all tax collections and spending by the existing State of California, and creating new, more representative governments with the ability to enact public policies that make the most sense for the new state." Brown says that the new states would be smaller "and thus more efficient and closer to their constituents". He also believes that California is a "failed state".
I guess if this did go through it could benefit other states, by taking all of the political power California has and breaking it up into six smaller states.