The most recent California Field Poll Finds that:

When voters are asked which of the state’s three main voting systems currently in use provided them with the greatest confidence that their vote would be counted accurately, remarkably, each voting system was preferred by almost identical proportions. About one in three voters (32%) place their greatest confidence in voting by means of a paper ballot in which they are asked to select their preference by filling a circle or oval. Another 31% have the greatest confidence in votes cast using a punch card system, while a similar proportion (31%) have the most confidence in voting electronically using a touch screen machine.