On this edition of KCBS In Depth, we get ready for the midterm elections by checking in on a few of the most important races that the KCBS news team will be tracking come election night. And then in the second half of the program, we take a step back from the horse race to discuss why it is that the threat of political violence seems to be growing this election cycle. Guests:  Doug Sovern, political reporter, KCBS Radio Robert Pape, professor of political science, University of Chicago | director, Chicago Project on Security and Threats Host: Keith Menconi