Democratic presidential candidate Tulsi Gabbard said Thursday that she will not run for re-election for her U.S. representative seat, saying she wants to focus on trying to secure her party’s nomination to challenge President Donald Trump.

Gabbard, who represents Hawaii, made the announcement in a video and email to supporters.

“I believe that I can best serve the people of Hawaii and our country as your president and commander-in-chief,” Gabbard said in the video.