U.S. Rep. Tulsi Gabbard announced Sunday that she is supporting Vermont Senator Bernie Sanders for president.

The Democrat from Hawaii will resign her position as vice chair of the Democratic National Committee so that she can actively endorse Sanders.

Gabbard said in a statement:

“As a veteran of two Middle East deployments, I know firsthand the cost of war. I know how important it is that our Commander in Chief has the sound judgment required to know when to use America’s military power — and when not to use that power.

“We need a Commander in Chief who has foresight and good judgment; who understands the need for a foreign policy which is robust in defending the safety and security of the American people; who will not waste precious lives and money on interventionist wars of regime change. Such counterproductive wars undermine our national security and economic prosperity.”

Sanders is running against Hillary Clinton, the former secretary of state, New York senator and First Lady. Clinton is backed by many top Hawaii Democrats, including U.S. Sens. Mazie Hirono and Brian Schatz.

Last year, Gabbard criticized Florida Rep. Debbie Wasserman Schultz, the chair of the DNC, for a restricted candidate debate process.

Gabbard’s endorsement comes the day after Clinton defeated Sanders in the South Carolina primary. Twelve states hold elections on Super Tuesday, March 1.

.@MarkRuffalo Aloha and thank you for your support. https://t.co/8gVQsDr0Tn

— Tulsi Gabbard (@TulsiGabbard) February 28, 2016

As a veteran of the Iraq War, Rep. @TulsiGabbard understands the cost of war. I am honored to have her endorsement.https://t.co/0e1BQ48eyb — Bernie Sanders (@BernieSanders) February 28, 2016