joining us on the phone is annie kearny who has been following all of this for politico. annie: thanks for having me. host: let's talk about donald trump and hillary clinton. what is their approach? annie: this is the most critical moment of the race for both of them. clinton, she has been preparing in a very standard way with a big team around her who have done debate for democratic presidential candidates going back to the 1990's, and she has two goals. she needs to discredit him and make him look unqualified, and she also needs to give voters a positive reason for voting for her. they both have very high unfavorables in the campaign and, in a series of speeches have been trying to give voters something to vote for, not just against. that is part of what she has to do. donald trump, like the rest of his campaign, has been going about debate prep in an unorthodox way. he has said he doesn't want to do mock sessions with a hillary clinton standin. roger ailes has been advising him, but just like the rest of his campaign, he might be winging it, whereas hillary clinton has