To vote you must be registered. And if you want to vote in the Nov. 2 elections in California, you have to send in your registration with a postmark of October 18 (that's next Monday) or earier. So: now or never. More details via the California Secretary of State's website.
Voter Registration Deadline: Monday
Making sure your voice is heard in this election
Thursday, Feb 10, 2011 Updated at 7:41 AM PDT