WASHINGTON — Democratic Rep. Elissa Slotkin won Michigan’s razor’s-edge race for U.S. Senate, defeating former Republican congressman Mike Rogers in a battle of attrition. Slotkin joined Wisconsin’s Tammy Baldwin in holding two “blue wall” Senate seats for Democrats in states that Trump won. CANDIDATES: Democratic Rep. Elissa Slotkin, former GOP Rep. Mike Rogers WINNER: Slotkin POLL CLOSING TIME: 8 p.m. …