constant contact with russia to try to secure griner s release. and donald trump is firing back as author bob woodward is sharing his recorded phone calls with the former president. woodward joins us to break down the trump tapes and take us behind the scenes of their extraordinary conversations. welcome to our viewers here in the united states and around the world, i m wolf blitzer and you re in the situation room. this hour, we re counting down to the pivol u.s. senate debate in pennsylvania as well as the bigger midterm battle playing out across the country over the next 14 days. cnn correspondents are out in force in critical swing states. and here in washington covering the fight for control of congress. first, let s go to jeff zeleny in harrisburg, pennsylvania. the senate debate begins two hours or so from now. what do we expect? reporter: wolf, this is the marquee senate debate. when they go head-to-head for just an hour this evening. the first time they ve ev