On October 5, the California Secretary of State released a new registration tally, as of September 9, 2016. Every qualified party gained registrations (in raw numbers) compared to the last tally (July 7, 2016) except that the Republican Party dropped 9,670 members and the Peace & Freedom Party dropped 836 members.
The current percentages are: Democratic 45.21%; Republican 26.78%; American Independent 2.50%; Libertarian .66%; Green .46%; Peace & Freedom .38%; unqualified parties .61%; no party preference 23.38%.
The July 2016 percentages were: Democratic 45.10%; Republican 27.09%; American Independent 2.52%; Libertarian .64%; Green .43%; Peace & Freedom .39%; unqualified parties .54%; no party preference 23.29%. The large increase in unqualified parties seems to be caused by Nevada and Trinity Counties transferring many voters from the “no party preference” to the “other” category.
The active unqualified parties in California, the Reform and Constitution Parties, did not re-file for political body status and thus no data is available for them in the latest tally.
The Constitution Party filed after September 9.
The statewide database of voter registration has gone on line in the last month (several years after the federal deadline), and is the official record.
IIUC, the SOS now generates registration reports and sends them to the counties who in turn certify them as being correct. There is also a bunch of gobbledygook about how party preferences are recorded. I suspect that the increase for Sierra and Trinity are related to those (they might have coded some as “Other” but always reported them as NPP>
Since there is now a statewide database of party affiliations, there is no reason not to generate a complete list, like is done in Louisiana.