Is reform coming to Arizona's presidential preference election, which blocks independent voters from participating? And Donald Trump and Ohio's governor have backed different candidates in that state's Republican Senate primary. Here's why Democratic incumbent Sherrod Brown would probably prefer to face Trump's pick.This episode: political correspondent Susan Davis, senior political editor and correspondent Domenico Montanaro, and KJZZ political editor Ben Giles.*Our producers are Jeongyoon Han, Casey Morell & Kelli Wessinger. Our editor is Eric McDaniel. Our executive producer is Muthoni Muturi. **Listen to every episode of the NPR Politics Podcast sponsor-free, unlock access to bonus episodes with more from the NPR Politics team, and support public media when you sign up for The NPR Politics Podcast+ at *plus.npr.org/politics).Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)