U.S. Rep. Alexandria Ocasio-Cortez (D-New York) has thrown her support behind one of the Democrats running in Texas’ U.S. Senate race.

On Friday, Ocasio-Cortez announced her support for Jolt founder Cristina Tzintzún Ramirez’s campaign for U.S. Senate. Tzintzún Ramirez is the only candidate who Ocasio-Cortez endorsed during her endorsement announcements last week.

Tzintzún Ramirez is locked in a 12-person primary for the Democratic nomination for U.S. Sen. John Cornyn’s seat. Tzintzún Ramirez is believed to be among the top tier of the candidates in the race, along with State Sen. Royce West, former U.S. Rep. Chris Bell, former congressional candidate MJ Hegar, and Houston City Councilwoman Amanda Edwards.

Voters will decide this primary on March 3.