The principal intent of campaigns is to give voice to the candidates’ positions on major issues. When casting their ballots, voters consider personality, party allegiance, character traits and other factors. In Pennsylvania’s Senate election, a candidate’s personal health has come to the fore, and the outcome could be a key in determining control of the Senate. In my experience, politicians who are not fully transparent in disclosing their health information can become vulnerable to the spread of misinformation, rumors and antics that detract from the candidate’s stances on major issues. That risk is playing out in the Fetterman-Oz race in...