Rep. Seth Moulton speaks after losing the Democratic primary during a primary election night event Tuesday Sept. 1, 2026, in Boston. (AP Photo/Reba Saldanha)

Attendees cheer after U.S. Sen. Edward Markey, D-Mass., won the Democratic nomination during a primary election night event Tuesday, Sept. 1, 2026, in Boston. (AP Photo/Charles Krupa)

U.S. Sen. Edward Markey, D-Mass., reacts with his wife Susan Blumenthal after winning the Democratic nomination during a primary election night event Tuesday, Sept. 1, 2026, in Boston. (AP Photo/Charles Krupa)

U.S. Sen. Edward Markey, D-Mass., speaks alongside his wife Susan Blumenthal after winning the Democratic nomination during a primary election night event Tuesday, Sept. 1, 2026, in Boston. (AP Photo/Charles Krupa)

Teachers conduct online lessons for elementary students from a public school damaged by a Russian attack, in Kyiv, Tuesday, Sept. 1, 2026. (AP Photo/Dan Bashakov)

Schoolgirls work on a lesson in a bomb shelter during a Russian air attack on the first day at school at a cadet lyceum in Kyiv, Ukraine, Tuesday, Sept. 1, 2026. (AP Photo/Efrem Lukatsky)

Cadets sing the national anthem on the first day at school in a cadet lyceum in Kyiv, Ukraine, Tuesday, Sept. 1, 2026. (AP Photo/Efrem Lukatsky)

Children, parents and teachers stay in an underground shelter during an air raid alarm during the traditional back to school celebrations in Kyiv, Tuesday, Sept. 1, 2026. (AP Photo/Francisco Seco)