first let's go to mahsa saeidi at der rango high school which is quite possibly the busiest location. reporter: this is one of 130 caucus sites throughout the state. what you are not seeing right now, the line is all the way through the street. we will try to walk you through what's going on right now. a lot of people tell me they are coming here to make their picks before work. they show their i.d. and then head over right here. this is where they go to figure out what precinct they will be at. once they get their precinct number, they pick up a blank battle at -- ballot at the table. they have two choices. they can make their pick and drop it in a ballot box down there and head home or they can choose to take part in the caucus. you can see 30 tables set up here. once everyone from the precincts has arrived, that is when the caucus process will begin. they have two choices. first degree are in a rush they can come here and make their pick and leaver they can that starts when everyone gets here, which should be around 6:00. this process goes on till 8:30. at 8:30 they will count the