The National Republican Congressional Committee Wednesday added 33 Republican candidates to its “On the Radar” and “Contender” lists. Those are levels one and two of the committee’s “Young Guns” program — a status which signals a high level of attention from the national party. Reaching “Contender” status are 14 candidates including Jon Runyan (N.J.), who’s challenging Rep. John Adler (D), and John Koster (Wash.) who’s challenging Rep. Rick Larson (D). The candidates making the NRCC’s “On the Radar” list include Hunt Downer (La.) and Jeff Landry (La.), both running for the seat left open by Rep. Charlie Melancon (D-La.), and...