There are numerous ways to vote nowadays (creative commons)

Various types of voting have become increasingly popular over the years, with mail-in votes and other forms of absentee ballots growing much more common. Vote-by-mail ballots, for instance, made up 65% of all Californian ballots in the June 2012 primary. With the latest ability to register online, the number of Californian voters should increase even further.

Mail-in-votes continue to be a common way of simply getting an opinion in without the need for waiting in line or scouting out an electoral booth, so there will likely be many a good number of local residents participating. The last day to request a vote-by-mail ballot is October 30. 

A registered voter may request a ballot through the application on the back of the sample ballot booklet which should have all been mailed in by the county elections office. One can also obtain an application online here. 

That being said, registered voters can always vote in person at their county elections office prior to November 6th.