Bronx and Queens Rep. Alexandria Ocasio-Cortez’s clout within the Democratic Party will once again be put to the test Tuesday evening as voters weigh in on a key Pennsylvania race in which the lefty firebrand made an endorsement. Ocasio-Cortez (D-NY) threw her weight behind state Rep. Chris Rabb (D), a self-styled Democratic Socialist, in the race for Pennsylvania’s 3rd Congressional District, one of the bluest districts in the country.