Margolies was the clear celebrity candidate in the race. Her son married Chelsea Clinton in 2010, making her Chelsea’s mother-in-law. In 1993, Margolies was a freshman House member who cast the deciding vote in Congress for Clinton’s tax increases. She was defeated the next year in the wave midterm election that gave Republicans control of the House for the first time in four decades ABC News called her favor to Clinton “the most celebrated political debt of the year.”

Bill and Hillary Clinton went all out to campaign for her, each of them holding a fundraiser in her honor. Just last week, Bill cut a robo-call on her behalf touting how her vote “reversed trickle-down economics and set the country on the longest peacetime expansion in history — one that all Americans participated in.”

But a 37-year-old state legislator named Brendan Boyle cleaned the Clinton clock, defeating Margolies by 41 percent to 27 percent by sweeping the portions of Philadelphia in the district while Margolies won the tony Montgomery County suburbs. After a one-minute concession speech last night, Margolies whispered to her pollster, Celinda Lake, “It’s a shock.”