Ocasio-Cortez and Others Rally With Summer Lee Ahead of Primary

A high-energy crowd rallied on Sunday in Pittsburgh to support Representative Summer Lee, a left-leaning congresswoman whose primary on Tuesday is a high-profile test whether she can stave off a challenge aimed in part at her stance over the war in Gaza.

Headlining the event were Representative Alexandria Ocasio-Cortez of New York, the progressive lawmaker, and Justin Jones, the Tennessee state representative who rose to stardom when he was briefly ousted for protesting inaction on state gun legislation.

Speakers framed Ms. Lee’s race, in Pennsylvania’s 12th District, as crucial to building a movement for working people and to fighting what they cast as billionaire influence in the race.

The rally with several hundred supporters drew a small group of protesters who held signs outside the headquarters of the Pittsburgh Federation of Teachers to criticize Ms. Lee and Ms. Ocasio-Cortez’s stances on the war in Israel and Gaza. Ms. Lee’s primary is one of the first down-ballot electoral tests of the Israel-Gaza conflict this year.

“To fight for common sense in the House is to often be alone. I have seen Summer walk alone,” Ms. Ocasio-Cortez said. “On Tuesday, what we must do is show her and show the world and show the people in that big white house that she is not alone.”

“It’s not about winning — it’s about winning big,” she added.

Ms. Lee won a close primary in 2022 against a moderate challenger on her way to become the first Black woman to represent Pennsylvania in Congress. She has garnered broad support from Democrats this year. Even so, she has also faced pressure within her district after becoming one of the first members of Congress to call for an immediate cease-fire, just over a week after Hamas attacked Israel, and Israel responded with a military assault on Gaza.