Rep. Ayanna Pressley (D-MA), a rising progressive star and the first black woman to represent Massachusetts in Congress, announced she is endorsing Sen. Elizabeth Warren for president, the Boston Globe reports.

“In supporting Warren, she is breaking with three other progressive freshmen lawmakers who make up ‘The Squad; — Representatives Alexandria Ocasio-Cortez of New York, Ilhan Omar of Minnesota, and Rashida Tlaib of Michigan. Those women recently endorsed Senator Bernie Sanders of Vermont, giving his campaign a major boost.”