It was another busy week in Washington and on the campaign trail. Here is our quick rundown of what happened in the 2020 race.

A health scare for Sanders

Senator Bernie Sanders of Vermont had a heart attack this week, and doctors inserted two stents to open a blocked artery.

Mr. Sanders, 78, was taken to a Las Vegas hospital on Wednesday after he experienced “some chest discomfort” at an event Tuesday night. His wife, Jane Sanders, later said that he was resting comfortably and that he would participate in the next Democratic debate, on Oct. 15. The news that he’d had a heart attack was not revealed until he was discharged from the hospital on Friday.

Stents are common, Dr. Lawrence K. Altman wrote. But the news of Mr. Sanders’s heart attack raised more serious questions. You can read more about that here.

Sanders and Warren raised the most this summer

The end of the third fiscal quarter was Monday, and candidates have started announcing their fund-raising totals for July, August and September. We’re tracking the numbers here.