Former Alaska Gov. Sarah Palin endorsed Danny Tarkanian for the U.S. Senate in Nevada, Breitbart News reports exclusively.

Tarkanian, who is of Armenian descent, announced his 2018 Republican primary challenge against incumbent Senator Heller for a U.S. Senate seat from Nevada on early August.

“Commonsense Conservatives in Nevada and across America need to unite and help win this critical fight. I strongly endorse Danny Tarkanian for the United States Senate and look forward to helping him win this important election,” Palin said in the statement endorsing Tarkanian.

Tarkanian in a statement of his own responded by thanking Palin.

Polling data on the race suggests that Tarkanian has a chance to topple Heller in Nevada, should he gain momentum moving into the next several months. Senate Majority Leader Mitch McConnell, however, is likely to fight as hard as he can to save Heller—but endorsements from major national conservative figures like Palin open the door to a potential upset.