Although she won the state's open primary, the Democrats went for radical open-borders leftist Kevin De León, another one who would abolish ICE and sponsored a law to stop the state from helping federal immigration authorities.
Since she will not face a Republican opponent during the November midterm elections, Pressley is poised to become the first non-white person (male or female) to represent MA in Congress.
The Florida contest immediately took on racial overtones after Republican US Congressman Ron DeSantis, who is white, urged voters not to "monkey this up" by voting for Gillum, who is black. He was buoyed by an advantage in campaign funds and a number of endorsements, including from Deval Patrick, the state's first African-American governor.
Capuano voted against the Iraq War and the Patriot Act, and supported Medicare-for-all and sanctuary cities long before they became mainstream ideas. That made for unusual dynamics: The Congressional Black Caucus PAC had endorsed Capuano.
Tahirah Amatul-Wadud lost the state's 1st Congressional District to Rep. Richard Neal (D-Mass.).
"Clearly, the district wanted a lot of change", he said.
Capuano could feel the ground shifting under him.
"We won, we won", Pressley says, as she is hugged by numerous people around her.
"People will respond when there are newcomers on the ballot, when you have highly spirited campaigns and when you are taking it directly to the president", Ubertaccio said.
Abrams' is hoping to tap the hundreds of thousands of black Georgians who don't typically vote - but she makes no secret about also needing college-educated white suburbities and younger voters.
Pressley's victory, coming on the heels of democratic socialist Alexandria Ocasio-Cortez's stunning primary upset in a congressional district in New York City in June, has given the Democratic Party's hard-left wing the belief that history is on its side. She used that experience to re-engage her supporters and turn out tens of thousands of new voters in the primary.
An incumbent Congressman from MA won't be returning to Washington after an upset at the Democratic primary this week. He also wavered back and forth on impeaching President Trump since a year ago, and both candidates have admitted that they would likely vote the same way on key issues.
Her 66-year-old opponent has represented the district for two decades, and had not faced a primary challenger since he first won the nomination in 1998.
Geoff Diehl, a Whitman state representative and ardent supporter of President Donald Trump, beat primary candidates John Kingston and Beth Lindstrom for the chance to take on Democratic U.S. Sen.
Boston - and the Democratic Party - is in the midst of a massive transformation from a working class, largely white majority into a far more racially and ethnically diverse one.
The victor of the final election in November will claim the vacant seat of former Democratic Rep. James Cantwell, who stepped down earlier this year to go to work for U.S. Sen.