George Conway, ex-husband of top Trump aide Kellyanne, runs for House in New York—as a Democrat

George Conway, who was once married to a former adviser to the president before becoming a prominent anti-Trump voice, announced on Tuesday that he is running for a U.S. House seat in New York City, testing whether he can turn his strong social media following into votes in a crowded Democratic primary.

Conway — who worked for years in New York City as an attorney but has more recently been living in Bethesda, Maryland — said he was spurred to run for Congress after a conversation with...