A mounting fight over the makeup of the Supreme Court is drawing extra attention to Arizona’s already high-profile Senate race. But political analysts question how much of an impact the high-court drama will have on the contest, even if Democratic challenger Mark Kelly defeats Republican Sen. Martha McSally and gets sworn into office by the end of November. “We’ve had that race ‘leans Democrat’ since March. I don’t see the court vacancy changing this race a whole bunch,” said J. Miles Coleman, associate editor of Sabato’s Crystal Ball, an election forecasting publication from political analyst...