The Ohio primary kicks off a month of similar contests in vital swing states from Pennsylvania to Georgia. And there's one unofficial candidate on the ballot: former President Donald Trump.According to a New York Times count, the former president has endorsed candidates in at least 40 Republican primaries. We discuss what's at stake for the Republican Party — and for Trump — in these midterms. Want to support 1A? Give to your local public radio station and subscribe to this podcast. Have questions? Find us on Twitter @1A.