Former House Majority Leader Steny Hoyer (D-Md.) received a primary challenge Thursday from volunteer firefighter and former “Jeopardy!” contestant Harry Jarin, who is seeking to make age a centerpiece of the campaign. In a statement announcing his bid, Jarin, 35, said Hoyer, 85, “represents a bygone era of politics that isn’t working” and that congressional seats should not be treated as “lifetime appointments.” “I’ve seen from the inside how the Democratic Party has totally lost touch with working people,” Jarin said. “We didn’t present a vision of the future or politicians that people could relate to, and that’s what opened...