California Secretary of State Alex Padilla will certify the initiative as qualified for the November 6th ballot on June 28.
The initiative depends on Article IV, Section 3 of the U.S. Constitution, where the document sets the conditions under which a state can split itself up.
"The citizens of the whole state would be better served by three small state governments while preserving the historical boundaries of the various counties, cities, and towns", Draper said in his statement a year ago.
In northernmost parts of California, rebellious souls have been flirting since 1941 with the idea of their own state called "Jefferson" which would mesh with the southern counties of Oregon.
A new Southern California state would run south from the Northern California border, skirt around the coast from Monterey past Los Angeles, and include San Diego, Death Valley and the rest of the state east to Nevada and Arizona.
According to a letter from the state's Legislative Analyst's Office, the new states will face income disparities, in addition to "virtually certain" court challenges that could take years to resolve. If a majority of voters who cast ballots agree, the process would begin for the first division of an existing US state since the creation of West Virginia in 1863.
Constitutional lawyer and professor Jonathan Turley had told CNN that congressional approval is not impossible, but not likely to happen, as Democrats could feel they have too much to lose.
Adding the proposal to the ballot is the first in a long number of steps that would be required to actually split the country's largest state.
"To create three states from a standing start, you'll get all the benefits of knowing all the things that worked in the past, and all the things that could work in the future and you get to eliminate all the baggage you got in the state", Draper said in a May news conference at Draper University.
A CNN analysis in April found that even if California split into three states, it would still be underrepresented in the Senate compared with most of the US.
A nascent opposition campaign already is sounding the more practical alarms about splitting California into three states.
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.
He has described California as a state with crumbling bridges and roads, a struggling, underfunded education system and oppressively high taxes.