Delaware voters cast their statewide primary ballots last week, drawing to a close a primary season that began in February.

For Democrats , the years down-ballot primaries showcased the growing strength of its activist progressive wing which continued its winning streak with a handful of congressional and state legislative races as well as its limits. The partys establishment maintained dominance in Senate races, and the left squandered some straightforward opportunities for the House of Representatives .

Here are five takeaways from the Democrats internecine contests this year: