Having been snubbed when former President Trump endorsed the U.S. Senate candidacy of a rival a week before, Josh Mandel presented himself Saturday to a northwest Toledo church as a Republican party outsider while railing against the separation of church and state, Democrats, and “establishment Republicans.” “The core of my campaign is standing up for the Judeo-Christian bedrock of America,” Mr. Mandel, flanked by U.S. Sen. Ted Cruz (R., Texas), told his audience of more than 100 at Northwest Baptist Church on Alexis Road. “We’re the only U.S. Senate race in Ohio, and in America, that is sidestepping the traditional...