EXCLUSIVE: Sean Parnell, the former Trump-backed Senate candidate from Pennsylvania who recently suspended his campaign, endorsed Republican Dave McCormick in the hotly-contested race on Thursday. 

McCormick, the former CEO of one of the world's largest hedge funds who also has ties to former President Trump, declared his candidacy for Senate on Thursday. McCormick joins a crowded field of Republicans, including well-known celebrity physician Mehmet Oz, who are vying for the GOP nomination to succeed retiring GOP Sen. Pat Toomey in the key battleground state of Pennsylvania. 

PENNSYLVANIA SENATE RACE: FORMER HEDGE FUND EXECUTIVE MCCORMICK JUMPS INTO COMBUSTIBLE GOP PRIMARY

"I have been watching and hoping a candidate would emerge--someone who could give me total confidence that they will fight for Pennsylvanians and never back down to the Woke mob, but that just hasn't happened, until now," Parnell told Fox News. "Dave McCormick is that candidate." 

Parnell said he has "gotten to know" McCormick and said the two have been "talking about issues that are important to the commonwealth and discussing what it's going to take to secure Pennsylvania's future." 

David McCormick, the former CEO of a giant hedge fund, declared his candidacy for Senate on Thursday, Jan. 13, 2022, formally joining a crowded field of Republican contenders vying for the GOP nomination in the key battleground state of Pennsylvania. (McCormick Senate campaign)

Parnell pointed to McCormick's efforts to create jobs in Pittsburgh during his time as CEO of FreeMarkets, a publicly-traded technology firm that employed nearly 600 workers in the city. 

"Dave's entrepreneurial vision helped spark Pittsburgh's revitalization," Parnell said, adding that McCormick "deserves credit for helping make western Pennsylvania one of the best places in the world to live, work and raise a family." 

Parnell, a U.S. Army veteran, also pointed to McCormick's military service. McCormick is a Gulf War combat veteran. 

"Anyone who has fought for our country on the battlefield has proven that they will sacrifice and put America's interests over their own personal interests," Parnell said. "It's the very definition of America First." 

He added: "That tells me that when Dave gets to the Senate, we can rest assured that he will truly serve the interests of Pennsylvanians." 

PA GOP SENATE BATTLE: DAVID MCCORMICK RETURNS FIRE, CALLS ON DR. OZ TO ‘RENOUNCE’ TURKISH CITIZENSHIP

Parnell, who was endorsed by Trump, suspended his Pennsylvania Senate campaign in November in the midst of a custody battle with his estranged wife.

"A combat vet from western PA who helped reignite the industrial flames of Pittsburgh--that's someone we can all get behind," Parnell said. "He's the America First candidate in this race." 

Sean Parnell suspends Senate bid

FILE - In this Sept. 22, 2020 file photo, Sean Parnell walks through people gathered at a campaign rally for President Donald Trump at the Pittsburgh International Airport in Moon Township, Pa. (AP Photo/Keith Srakocic, File) (AP )

Parnell said he plans to campaign with McCormick starting Saturday at Pennsylvania's Central Caucus, hosted by the state party.

McCormick’s campaign website touts his support for the former president’s "America First" agenda. 

TRUMP-BACKED SENATE CANDIDATE SEAN PARNELL SUSPENDS 2022 CAMPAIGN IN PENNSYLVANIA

McCormick was considered for a top Trump Cabinet post, and his wife, Dina Powell McCormick, served as deputy national security adviser in the Trump administration. 

Trump, though, has not yet endorsed a new candidate in the race. 

McCormick’s entry into the race Thursday was expected after he set up an exploratory committee last month and went up with TV ads the past couple of weeks. Last week, he resigned as CEO of Connecticut-based hedge fund Bridgewater Associates as he prepared to launch his Senate campaign.

Dr. Mehmet Oz, Professor of Surgery, Columbia University speaks onstage during the 2021 Concordia Annual Summit - Day 2 at Sheraton New York on September 21, 2021 in New York City. (Photo by Leigh Vogel/Getty Images for Concordia Summit) (Leigh Vogel/Getty Images for Concordia Summit)

McCormick grew up in Pennsylvania, where his family has deep roots, but had lived in Connecticut in recent years. The McCormicks recently bought a home in the Pittsburgh area.

McCormick joins a field of 10 Republican candidates, including Dr. Oz. The cardiac surgeon, author and host of TV’s "Dr. Oz Show,"  launched his own campaign for Senate six weeks ago. 

Among the other leading GOP contenders are a real estate developer, philanthropist and 2018 Republican nominee for lieutenant governor Jeff Bartos; Carla Sands, a real estate executive and major Republican donor who served as ambassador to Denmark under Trump; and veteran and conservative political commentator Kathy Barnette.

Fox News' Paul Steinhauser contributed to this report.