"You can not have a government for and by the people if it is not represented by all of the people"

[JHan]

25. You'll be interested in 538's analysis too..

https://fivethirtyeight.com/features/why-ayanna-pressleys-upset-win-in-massachusetts-isnt-really-like-alexandria-ocasio-cortezs/

ehrnst posted it on DU too : https://www.democraticunderground.com/100211095004

The part that stands out:

"Maybe voters agreed with Pressley’s argument that Congress needs politicians with different “lived experiences” — in her case, surviving sexual assault or being raised by a single mother. Maybe identity politics did play a role, just in an unexpected way. Maybe it was “woke” white voters who preferred to see an African-American represent a majority-minority district and voted accordingly. Maybe voters agreed with the assertion that top House Democrats should yield to the next generation of leaders and, unable to vote Nancy Pelosi out of office directly, opted for Pressley (age 44) over Capuano (66). Maybe Pressley’s gender was actually the No. 1 factor; there is clear evidence that women have outperformed men in Democratic primaries this year.

Personally, I think the simplest explanation is the best one: Voters just wanted new blood. "

There wasn't a wide margin of victory last I checked. Just a competitive race, with an excellent ground game from Pressley which gave her an advantage. And she's got experience on her side. This is an excellent example of building experience over time and how it made her competitive against a strong incumbent who she had little disagreement with policy-wise.