When given the chance to get behind the first black woman from MA headed to Capitol Hill, the Congressional Black Caucus chose to endorse Capuano instead. Capuano has been an established progressive Democrat, supporting issues like single-payer healthcare.
Capuano was considered one of the most liberal members of the MA delegation, and Pressley had acknowledged she had few major policy quarrels with him.
Massachusetts Democrats are eagerly turning theirs sights toward a midterm showdown with Republicans after a revolt from the progressive wing of the party toppled several longtime leaders in the state Tuesday night.
"Ayanna Pressley is going to be a good congresswoman and MA will be well served", Capuano said in his concession speech. Ocasio-Cortez endorsed Pressley, sending her media attention in the final leg of her campaign.More news: Tottenham confirm a further four matches will be played at Wembley
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Diehl defeated John Kingston, a businessman who once tried to fund a third-party challenge to Trump, and Beth Lindstrom, who served in Republican Gov. Mitt Romney's administration.
Ocasio-Cortez tweeted her support for Pressley on Tuesday night, writing "Congratulations to my sister in service, @AyannaPressley, on continuing her historic path into Congress tonight".
An African-American woman pulled off an upset victory in a Democratic primary contest against a 10-term entrenched male incumbent in Boston, the latest sign that insurgent USA candidates from the left are gaining ground. Her win comes at the tail end of a primary season in which black politicians have made a series of advances.
Pressley has always been a Democratic star in the making who's been closely watched since her 2015 speech at an EMILY's List event headlined by Hillary Clinton - but, with no members of Congress retiring, had no path to the national stage.
Her total in Boston was just 1,800 fewer votes than Capuano received throughout the whole 7th district. Instead, the 44-year-old Pressley - already a rising star in Democratic politics - cast the race as about Democrats' need for a new, more assertive style in the Donald Trump era. In fact, she said, the two would vote the same way.
Democrats need to pick up 23 seats in the House of Representatives and two in the Senate nationwide in the November 6 general election to gain a majority that could allow them to counter Republican President Donald Trump's agenda.