Tensions have flared between Dr. Abdul El-Sayed, the Democratic Senate nominee in Michigan, and his former primary rival. “I don’t want any distractions,” Dr. El-Sayed said Saturday.

© Nic Antaya for The New York Times; Bill Pugliano / AFP via Getty Images

Dr. Abdul El-Sayed and Representative Haley Stevens traded sharply critical comments Friday, escalating intraparty tensions in Michigan’s pivotal Senate race.

© Nic Antaya for The New York Times