Rep. Summer Lee (D-Pa.) arrives at a polling location in Swissvale to cast her vote in Pennsylvania's primary elections on Tuesday. (Quinn Glabicki/Reuters)
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Rep. Summer Lee, a far-left Democrat who has been critical of Israel’s military actions in Gaza, prevailed in Tuesday’s Pennsylvania primary election, which epitomized larger intraparty tensions over the Middle East and served as a test of Democratic voters’ attitudes about the war.

The race in Pennsylvania’s 12th District was considered a first test for the “Squad” of left-wing, progressive Democrats in Congress, some of whom face primaries this summer. But Lee’s race failed to attract the heavy outside spending from pro-Israel groups that is expected in future Democratic primaries, most notably against Rep. Jamaal Bowman in New York and Rep. Cori Bush in Missouri.