Adam Hamawy won a wide-open Democratic primary in New Jersey’s 12th Congressional District. What were his keys to victory?

Adam Hamawy, a surgeon and political newcomer, won New Jersey’s 12th Congressional District Democratic primary with 28% of the vote, defeating 12 candidates. His victory was attributed to the absence of the state’s former 'county line' ballot system and significant outside spending, including $2 million from American Priorities, a pro-Palestinian super PAC.