How is this for a policy?

In the event that an employee does not have sufficient time outside of working hours to vote in a state or nationwide election, the employee may take off enough working time to enable him or her to vote. Such time off shall be taken at the beginning or the end of the regular working shift, whichever allows for more free time, and the time taken off shall be combined with the voting time available outside of working hours. Under these circumstances an employee will be allowed a maximum of two (2) hours on the election day without loss of pay. Deductions will not be made from the salary of an exempt employee for time taken off for voting. Where possible, the employee shall give his or her manager at least two (2) days notice that time off to vote is needed.

Of course it is hard to do with call times and film shoots, but...