New Delhi, June 25 -- US President Donald Trump reacted sharply to a series of Democratic primary upsets in New York City on Wednesday, using social media to attack New York Mayor Zohran Mamdani and the candidates he endorsed after three of them won congressional nominations in races that ousted two incumbents.

The results marked a significant political victory for Mamdani, whose progressive coalition helped propel three allies to Democratic primary victories and reinforced his growing influence within New York's Democratic Party ahead of the November midterm elections.

Trump, who has frequently described Mamdani as a communist, responded with a series of posts on Truth Social.

"Many Communists running in badly failing Blue States. The...