PRIMARY DAY: WHAT TO WATCH FOR \u2014 West Virginia and Nebraska hold primaries today. Like last week\u2019s contests in Ohio, the action is mostly on the Republican side, and the main drama is about former President DONALD TRUMP.\nWEST VIRGINIA: Two GOP incumbents, Reps. ALEX MOONEY and DAVID MCKINLEY,\xa0 are facing each other in a congressional primary because the state lost a seat after redistricting.\nNEBRASKA: CHARLES HERBSTER, JIM PILLEN and state Sen. BRETT LINDSTROM are the three top GOP primary candidates running to replace the term-limited governor, PETE RICKETTS. The national implications of the race revolve mostly around Trump\u2019s endorsement of Herbster, who has been accused of sexual assault by eight different women.\nSubscribe to the POLITICO Playbook newsletter\nKara Tabor hosted this episode of POLITICO's Playbook.Jenny Ament is the Executive Producer of POLITICO Audio.