Ed Markey's the latest veteran politician to face a challenge on

He's one of the longest-serving members of Congress. She's a progressive, Elizabeth Warren-esque lawyer fighting against the "rich and powerful" and the Washington "status quo."

Ed Markey held off Joseph Kennedy in a Democratic Senate clash in

Kennedy Officially Launches His Primary Bid To Unseat Sen. Markey

Why Is Joe Kennedy Running Against Ed Markey? - The American Prospect

Ed Markey beats Joe Kennedy in Senate primary - The Boston Globe

Edward Markey defeats Joe Kennedy in Massachusetts Democratic

Edward Markey - Ballotpedia

The Green New Deal Lands in Congress - Inside Climate News

Ed Markey defeats Republican challenger Kevin O'Connor for another

The Memeable Mr. Markey – Mother Jones

AOC's Green New Deal: A New Millennial Climate Politics - The Atlantic

Markey-Kennedy Senate Race Puts Spotlight On Massachusetts Primary