The busiest primary night in August features four incumbents at genuine risk of losing their primaries. On the GOP side, Rep. David Schweikert (AZ-01) faces young self-funder Elijah Norton, who attacks the incumbent's ethics. And pro-impeachment Rep. Peter Meijer (MI-03) is fighting for survival against Trump-endorsed John Gibbs. On the Democratic side, Reps. Haley Stevens and Andy Levin are squaring off in suburban Detroit's redrawn 11th CD.Jump to a state: