U.S. Reps. Dave Joyce and Michael Rulli, the two incumbent Republicans who represent the Mahoning Valley, drew numerous challengers. In the 14th Congressional District, two Republicans — Niki Frenchko of Warren, a former Trumbull County commissioner, and Mark Zetzer of Russell — filed by Wednesday’s deadline to challenge Joyce, R-Bainbridge, who is seeking his eighth two-year term. Also filing were three Democrats — Bill O’Neill of Shaker Heights, a former Ohio Supreme Court justice and 11th District Court of Appeals judge; Carl Setzer of Moreland Hills, a restaurant owner; ...