here is list of rules and recommendations for documenting your vote from media law project :

http://www.dmlp.org/legal-guide/state-law-documenting-your-vote 

State Law: Documenting Your Vote " PLEASE NOTE: This page includes information current as of the November 2008 national elections; we are maintaining this page for archival purposes. Our guide for the November 2012 national elections is here. On this page, we provide a list of election laws, websites, and contact information for election officials in all 50 states and the District of Columbia. Contacting your state election officials is a great way to get information about what your state allows in terms of documenting the vote. You should also consult our chart summarizing the law in each state in order to determine whether your state allows recording inside polling places.  For general guidelines on photography and videography in and around polling places, see the Documenting Your Vote page in this guide. As Election Day approaches, we will continue to supplement the information on this page. Given the tight time schedule between now and the election, we'd love the help of our readers with this election law research.  If you've got input on this topic, please contact us. Select a state below to jump to its relevant information: "