Democratic divisions, polling misses and Ocasio-Cortez’s egg freezing: the week in politics.

© Illustration by The New York Times; photo by Stephen Maturen/Getty

At 73, Sherrod Brown is mounting a comeback bid in Ohio. He is one of the Democrats his party is counting on to retake control of the Senate.

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Ed Markey is hoping that his progressive politics will save him in Massachusetts.

© Mel Musto for The New York Times