The big Reagan Tribute keynote speech will be covered live on C-SPAN tonight beginning at 7:30 p.m. ET. The speaker will be President Reagan's "Karl Rove," his chief political strategist and pollster, Dick Wirthlin. Wirthlin is the author of the newly released best-seller, THE GREATEST COMMUNICATOR: What Ronald Reagan Taught Me about Politics, Leadership, and Life. In THE GREATEST COMMUNICATOR, Wirthlin reveals never-before-told stories about their epic 36 year friendship, a relationship that led to two of the biggest landslide presidential elections in American presidential history. Live C-SPAN coverage begins at 7:30 p.m. ET.