our homepage has many current programs ready for your immediate viewing such as journal" orhington the events we covered that day. if you are a c-span watcher, check it out at c-span.org. monday, university of north carolina professor and author of the book on how technology has been used in political campaigns since 2004 and how it is being used this election year. >> in this world of much more fragmented media attention, in a world of multiple different platforms where people consume media and timeshifting, campaigns need data, analytics, and technology to figure out which voters we need to reach, what messages are likely going to appeal to them, and how best to reach them. how do we get our message to people and helped them realize what the stakes of the election are? how do we make them care about politics? how do we get them adjusted in our candidates? >> watch monday night at 8:00 eastern on c-span two. >> on labor day, watch coverage of the national park service centennial. we are live from the robert e lee memorial, the most visited historic home in the park system. here is a p