The California Voter Foundation has published the Ten Things Elections Officials Can Do to Secure the Vote This November, and its number one recommendation is that voters be given the option to vote on paper wherever non-auditable voting technologies are used, providing everyone with the choice of "paper or plastic." We couldn't agree more.
Thanks to the efforts of secure voting advocates and our Secretary of State, California residents already have this choice, and EFF urges Californians to choose to vote on paper this November. EFF is working with a number of groups to get this policy adopted all across the nation.
For those living in locations using non-auditable electronic voting technologies (called DREs, for "direct recording electronic" devices), your best option is to vote by absentee ballot. In some locations you don't have to be "absent" to vote by absentee ballot. You simply have to ask for it. Other areas have more specific requirements, so if you don't know for sure, check the website of your state elections office.