Colorado primary tests reach, staying power of Democrats’ socialist surge

There have been four Democratic House incumbents defeated in primaries so far in 2026. We’re barely past the halfway point in the primary calendar, so it’s a notable number — already twice as many as in 2018, when “the squad” was born.

Source: [The Hill](https://thehill.com/homenews/campaign/5945924-democratic-house-incumbents-defeated/)