White House Deputy Chief of Staff Stephen Miller linked Zohran Mamdani's victory in New York City to unchecked immigration. (AP Photo/Alex Brandon)
"The new face of the Democrat Party just dropped, and it's straight out of a socialist nightmare," they wrote in an email.
Aiming to tie House Democrats to Mamdani, NRCC spokesman Mike Marinella argued that "every vulnerable House Democrat will own him, and every Democrat running in a primary will fear him."
Rep. Elise Stefanik of New York, a top ally of President Donald Trump who is seriously considering a run for Empire State governor next year, also pounced. Stefanik claimed that "a radical, Defund-the-Police, Communist, raging Antisemite will most likely win the New York City Democrat Mayoral primary."
New York City mayoral candidate Zohran Mamdani speaks during the National Action Network National Convention in New York City, U.S. (REUTERS/Jeenah Moon)
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Vice President JD Vance also weighed in, writing, "Congratulations to the new leader of the Democratic Party" in a post on Blue Sky, a social media platform frequented by progressives.
Fox News' Paul Steinhauser contributed to this report.
Anders Hagstrom is a reporter with Fox News Digital covering national politics and major breaking news events. Send tips to Anders.Hagstrom@Fox.com, or on Twitter: @Hagstrom_Anders.
https://www.foxnews.com/politics/democratic-congressman-hurls-profanity-laced-message-stephen-miller