Minnesota Lt. Gov. Peggy Flanagan said Thursday she will run for the U.S. Senate in 2026, the first Democrat to jump into what could be a crowded field to replace outgoing Sen. Tina Smith.

Margaret “Peggy” Timberlake Eaton has been the subject of books and even one Hollywood film (The Gorgeous Hussy) and is oftentimes portrayed as the vixen who nearly caused the collapse of President ...