Opinion John Fetterman needs to debate more than once for U.S. Senate

Debates about debates between candidates running for office are tedious, as barbs are traded over the number of matchups, the timing, the ground rules. But the one being played out in Pennsylvania between Lt. Gov. John Fetterman (D) and his Republican opponent in the race for U.S. Senate, Mehmet Oz, is worthy of attention. The race might well determine which party controls the Senate, and voters would benefit from seeing the two candidates exchange ideas and test each other. Mr. Fetterman has seemingly been reluctant to commit to firm debate...