“I don’t think any governor in history has had to fight a war against the federal government every single day,” Gov. Walz said after ending his re-election bid.

© Stephen Maturen/Getty Images

Mr. Walz drew national notice when Kamala Harris chose him as her running mate. A fraud scandal derailed his bid for re-election as Minnesota’s governor.

© Jamie Kelter Davis for The New York Times

Mr. Walz said a growing scandal over fraud in social services programs led him to abandon his run for a third term as governor of Minnesota.

© Stephen Maturen/Getty Images