Mamdani-backed candidates sweep New York City Democratic primaries

Candidates backed by New York City mayor Zohran Mamdani have swept key Democratic primaries, ousting two sitting members of Congress and strengthening his progressive movement, according to reporting by The Guardian and Al Jazeera.

A shift in party power

The results are a significant US politics story because they point to a shift in the balance of power within the Democratic Party and a change in primary-election strategy. Defeating incumbents in their own party is a notable show of strength for a movement still building national momentum.

Mamdani's endorsement appears to have carried real weight at the ballot box, suggesting his brand of progressive politics is resonating with primary voters in the city and beyond.

What happens next

The wins position Mamdani-aligned candidates to contest the general election with fresh momentum, while raising questions about the direction of the Democratic Party. Attention now turns to whether the progressive surge can be sustained as the contests move beyond the primaries.

For the incumbents who lost, the results are a stark reminder of how quickly the political ground can shift.