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The big picture: What Alexandria Ocasio-Cortez's win means

Alexandria Ocasio-Cortez at her victory party. Photo: Scott Heins/Getty Images

Rep. Joe Crowley hadn't faced a primary challenger in 14 years until 28-year-old Alexandria Ocasio-Cortez came along. Timing is everything, and 2018 couldn't have been a better year for her to run.

The big picture: Her victory wasn't just an isolated incident. It reflects the Democratic Party's fight for their identity under President Trump.