It’s my understanding that in many states, filming or taking photographs inside of a polling place is illegal.
Watch groups are cautioned that you cannot film inside the polling place or you could end up being the one arrested. They further instruct how to take down a written report.
No cell phone or cameras with 100 ft in TX.
http://www.sos.state.tx.us/elections/laws/advisory2012-16.shtml
Audio recordings?