Businessman Chris Ekstrom is asking voters to back former White House Physician Ronny Jackson in the race for U.S. House District 13.

Ekstrom recently announced his support for Jackson over former lobbyist Josh Winegarner in a series of Facebook posts. In a statement to the Amarillo Pioneer, Ekstrom said Winegarner’s support by former U.S. Rep. Will Hurd (R-Helotes), a moderate lawmaker whose PAC is backing the former lobbyist, should tell voters all they need to know about this race.

“I was truly shocked that in such a deeply conservative district, Winegarner accepted the most #NeverTrump endorsement in the Congress, Will Hurd,” Ekstrom said. “It’s outrageous in a District where President Trump’s approval rating is virtually 100% among Republicans.”

Ekstrom was the third place finisher in the March 3 primary election in District 13, finishing just a few points behind Jackson. During his campaign, Ekstrom raked in endorsements from several high profile conservative organizations, such as Young Conservatives of Texas, which is now also backing Jackson. Ekstrom joins several other former Republican candidates for the seat in asking voters to back the U.S. Navy veteran Jackson over Winegarner.

Voters will decide the runoff between Jackson and Winegarner on July 14.