Republican voters in Arizona and Michigan will go to the poll in their Republican presidential primaries on Tuesday, February 28. KCRW will provide a one-hour special (6-7pm PST) to cover the results of those contests. NPR's coverage will feature candidate speeches, newsmaker interviews, and expert analysis from NPR contributors E.J. Dionne (The Washington Post) and Matthew Continetti (The Weekly Standard). We'll also hear from NPR's Mara Liasson and Ron Elving. Ari Shapiro will be with Mitt Romney and Don Gonyea will be with Rick Santorum.