The 2016 primary election took place this past Tuesday, June 7th. The U.S. Presidential election is Tuesday, November 8, 2016.
There are currently 412,924 registered voters in Ventura County, consisting of 138,663 Republicans, 169,759 Democrats, 84,615 Non Partisan and 19,887 Other. Turnout for the primary election was 47.76% (updated), which is actually a significant improvement over the Presidential primary in 2012 at 32.9%. But inversely, of course, it means that a majority of registered voters in Ventura County still did NOT vote in the primary.
The estimated 2015 population of Ventura County was just over 850,000, with roughly 70% age 18 and older. This translates into roughly 600,000 residents eligible to vote in Ventura County, This means that for every two registered voters in Ventura County, there is one unregistered voter. It also means that for every voter in the primary, there were two eligible citizens who did not take part in the voting process.
With all that said, it certainly is EASY to register to vote in California. You can register in less than five minutes online at registertovote.ca.gov. And you can also, as I did, re-register if you would like to change political affiliation, or perhaps change to "No Party Preference."
The screenshots below show you the process. You of course must be an 18+ year old U.S. Citizen on election day, a California resident, and not be deemed incompetent to vote nor happen to be a convicted felon in jail or on parole.