The Latest: Pressley suffering from dehydration, exhaustion

BOSTON (AP) — The Latest on Ayanna Pressley's upset primary victory over Democratic U.S. Rep. Michael Capuano (all times local):

3 p.m.

Ayanna Pressley, the Democrat poised to become Massachusetts' first black congresswoman, is suffering from dehydration.

Pressley's campaign manager said Wednesday that "after an intense few days on the trail and a unity event this morning, Councilor Pressley is dealing with some symptoms of dehydration and exhaustion."

The campaign said it has cancelled the rest of Pressley's schedule for Wednesday and will keep the media updated about public events for Thursday.

The Boston city councilor defeated longtime U.S. Rep. Michael Capuano in the state's Democratic primary Tuesday.

At the party unity event, Pressley joked about feeling less than 100 percent saying "for the last six months I've been double-fisting Red Bull and cold brew. This morning I had none. I'm going through withdrawal."

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12 p.m.

The Democratic candidate who is poised to become Massachusetts' first black congresswoman says her upset primary win feels "surreal."

Ayanna Pressley has told supporters at a rally in Boston that she's thrilled and humbled by her victory over longtime U.S. Rep. Michael Capuano.

But the 44-year-old Boston city councilor says it's "a surreal, full circle moment." She said Wednesday she ran to represent those traditionally without a voice in politics who deserve to live in communities that are safe and have good schools.

Pressley also took a swipe at President Donald Trump, saying the only way to combat "the hate coming out of this White House" is with the kind of inclusive movement she built.

Pressley cruised to victory Tuesday in a district once served by Tip O'Neill and John F. Kennedy. Minorities now comprise a majority of the district's population.

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11:35 a.m.

The Democratic candidate who is poised to become Massachusetts' first black congresswoman is rallying her supporters in Boston.

City Councilor Ayanna Pressley unseated longtime U.S. Rep. Michael Capuano, a fellow Democrat, in Tuesday's primary election. She'll run unopposed in the November general election, giving her a virtual lock on the seat.

Pressley is holding a "unity rally" Wednesday in Boston's Dorchester neighborhood. Organizers say Capuano didn't plan to attend.

The 44-year-old Pressley cruised to victory in a district once served by Tip O'Neill and John F. Kennedy. Minorities now comprise a majority of the district's population.

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5:40 a.m.

Another longtime Democratic congressman has lost his seat in a primary upset to a candidate who appeals to those in the party seeking younger, more diverse voices.

In Massachusetts, Boston-area U.S. Rep. Michael Capuano lost the seat he's held for 20 years to a city councilor, Ayanna Pressley.

Without a Republican opponent on the November ballot, Pressley is almost assured of becoming the state's first black congresswoman.

The 44-year-old's upset over a white 10-term incumbent congressman underscores the shift underway in a Democratic Party whose base is seeking candidates of color who embrace liberal policies.

Her victory in Tuesday's primary election comes just two months after Alexandria Ocasio-Cortez similarly defeated a top House leader in a primary for a New York congressional seat.