California, Iowa, 4 Other States Hold Primaries: Key Races to Watch

A drive-up ballot box for early Iowa primary voters outside the Johnson County Administration Building in Iowa City, Iowa, on May 22, 2026. Charlie Neibergall/Getty Images

A drive-up ballot box for early Iowa primary voters outside the Johnson County Administration Building in Iowa City, Iowa, on May 22, 2026. Charlie Neibergall/Getty Images