A former Biden administration aide just won a crowded primary race in Massachusetts, setting up a glide path to the House of Representatives come November.Dan Koh came out first among six candidates to replace Rep.Seth Moulton, D-Mass., who ended his House tenure with a failed run for Senate against incumbent Sen.
Ed Markey, D-Mass., that came to a conclusion Tuesday night.Koh had the backing of both former President Joe Biden and former Vice President Kamala Harris, which was no surprise after his stint working in the White House.He first joined the administration as chief of staff to then-Labor Secretary Marty Walsh and later became deputy assistant to the president and deputy director of the White House Office of Intergovernmental Affairs.BIDEN INTERVENES IN DEM CONGRESSIONAL PRIMARY, WARNING ALL 'WE DID TO HELP ORDINARY PEOPLE IS IN JEOPARDY NOW'Congressional candidate Dan Koh participates in a debate between the Democratic candidates for the 3rd Congressional District seat in Lowell, Mass., on April 29, 2018.
(Keith Bedford/The Boston Globe via Getty Images)But his successful Tuesday primary is not the first time Koh ran for Congress.He narrowly lost the Democratic nomination in Massachusetts' nearby 3rd Congressional District to Rep.
Lori Trahan, D-Mass., in 2018.Koh is running on progressive campaign promises like abolishing "Trump's ICE" referring to Immigration and Customs Enforcement (ICE) and universal healthcare.He's now poised to succeed Moulton in the 6th Congressional District, which includes the northeastern portion of Massachusetts and is rated a safe blue seat.HARRIS-BACKED DEMOCRAT SCRUBS BLM-ERA POSTS AS HOUSE CAMPAIGN HEATS UPMoulton, who served in the Marine Corps, has represented the district since 2015.Sen.Ed Markey and Rep.
Seth Moulton stand at lecterns ahead of their debate at WWLP-22News on July 8, 2026.(Suzanne Kreiter/The Boston Globe via Getty Images)His campaign for Senate has been marked by a bitter primary battle against Markey...