People attend a Tax The Rich rally hosted by the Democratic Socialists of America in the Bronx, N.Y., on March 29, 2026. Jason Alpert-Wisnia/Hans Lucas/AFP via Getty Images A number of recent high-profile congressional primaries in the Democratic Party have resulted in the nomination of unexpected candidates. Many of these winning candidates have unseated entrenched incumbents, as 29-year-old Colorado attorney Melat Kiros did to U.S. Rep. Diana DeGette, who has been serving in the House for thr